Chicago

As the site of the Chicago Portage, the city emerged as an important transportation hub between the eastern and western United States. Chicago's first railway, Galena and Chicago Union Railroad, opened in 1848, which also marked the opening of the Illinois and Michigan Canal. The canal allowed steamboats and sailing ships on the Great Lakes to connect to the Mississippi River. A flourishing economy brought residents from rural communities and immigrants abroad. Manufacturing and retail sectors became dominant among Midwestern cities, influencing the American economy, particularly in meatpacking, with the advent of the refrigerated rail car and the regional centrality of the city's Union Stock Yards.

Chicago experienced some of the fastest population growth in the world, requiring infrastructure investments. In February 1856, the Chesbrough plan for the building of Chicago's and the United States' first comprehensive sewerage system was approved by the Common Council. The project raised much of central Chicago to a new grade. While raising Chicago out of its mud and sewage, and at first improving the health of the city, the untreated sewage and industrial waste now flowed into the Chicago River, thence into Lake Michigan, polluting the primary source of fresh water for the city. Chicago responded by tunneling two miles (3 km) out into Lake Michigan to newly built water cribs. In 1900, the problem of sewage was largely resolved when the city undertook a major engineering feat. The city reversed the flow of the Chicago River so that water flowed from Lake Michigan into the river, instead of the water flowing from the river into the lake. It began with the construction and improvement of the Illinois and Michigan Canal, and completed with the Chicago Sanitary and Ship Canal leading to the Illinois River which joins the Mississippi River.

After the Great Chicago Fire of 1871 destroyed a third of the city, including the entire central business district, Chicago experienced rapid rebuilding and growth. During its rebuilding period, Chicago constructed the world's first skyscraper in 1885, using steel-skeleton construction. Labor conflicts and unrest followed, including the Haymarket affair on May 4, 1886. Concern for social problems among Chicago's lower classes led Jane Addams to be a co-founder of Hull House in 1889. Programs developed there became a model for the new field of social work. The city also invested in many large, well-landscaped municipal parks, which also included public sanitation facilities.

In 1893, Chicago hosted the World's Columbian Exposition on former marshland at the present location of Jackson Park. The Exposition drew 27.5 million visitors, and is considered the most influential world's fair in history. The University of Chicago was founded in 1892 on the same South Side location. The term "midway" for a fair or carnival referred originally to the Midway Plaisance, a strip of park land that still runs through the University of Chicago campus and connects Washington and Jackson Parks.

20th and 21st centuries

The 1920s brought notoriety to Chicago as gangsters, including the notorious Al Capone, battled each other and law enforcement on the city streets during the Prohibition era. Chicago had over 1,000 gangs in the 1920s.

The 1920s also saw a major expansion in industry. The availability of jobs attracted African Americans from the South. Between 1910 and 1930, the black population of Chicago increased from 44,103 to 233,903. Arriving in the hundreds of thousands during the Great Migration, the newcomers had an immense cultural impact. It was during this wave that Chicago became a centre for jazz, with King Oliver leading the way.

In 1933, Chicago Mayor Anton Cermak was fatally wounded in Miami during a failed assassination attempt on President-elect Franklin D. Roosevelt. In 1933 and 1934, the city celebrated its centennial by hosting the Century of Progress International Exposition Worlds Fair. The theme of the fair was technological innovation over the century since Chicago's founding.

On December 2, 1942, physicist Enrico Fermi conducted the world's first controlled nuclear reaction at the University of Chicago as part of the top-secret Manhattan Project.

Mayor Richard J. Daley was elected in 1955, in the era of machine politics. Starting in the 1960s, many residents, as in most American cities, left the city for the suburbs. Structural changes in industry caused heavy losses of jobs for lower skilled workers. In 1966 James Bevel, Martin Luther King, Jr., and Albert Raby led the Chicago Open Housing Movement, which culminated in agreements between Mayor Richard J. Daley and the movement leaders. Two years later, the city hosted the tumultuous 1968 Democratic National Convention, which featured physical confrontations both inside and outside the convention hall, including full-scale riots, or in some cases police riots, in city streets. Major construction projects, including the Sears Tower (now known as the Willis Tower, which in 1974 became the world's tallest building), University of Illinois at Chicago, McCormick Place, and O'Hare International Airport, were undertaken during Richard J. Daley's tenure. When Richard J. Daley died, Michael Anthony Bilandic served as mayor for three years. Bilandic's subsequent loss in a primary election has been attributed to the city's inability to properly plow city streets during a heavy snowstorm. In 1979, Jane Byrne, the city's first female mayor, was elected. She popularized the city as a movie location and tourist destination.

In 1983, Harold Washington became the first African American to be elected to the office of mayor, in one of the closest mayoral elections in Chicago. After Washington won the Democratic primary, racial motivations caused a few Democratic alderman and ward committeemen to back the Republican candidate Bernard Epton, who ran on the race-baiting slogan Before it's too late. Washington's term in office saw new attention given to poor and minority neighborhoods. Washington died in office of a heart attack in 1987, shortly after being elected to a second term. Current mayor Richard M. Daley, son of Richard J. Daley, was elected in 1989. His accomplishments included improvements to parks and creating incentives for sustainable development. He does not plan to run in the next election.

Geography

Topography

Chicago is located in northeastern Illinois at the southwestern tip of Lake Michigan. It sits on a continental divide at the site of the Chicago Portage, connecting the Mississippi River and the Great Lakes watersheds. The city lies beside freshwater Lake Michigan, and two rivers—the Chicago River in downtown and the Calumet River in the industrial far South Side—flow entirely or partially through Chicago. The Chicago Sanitary and Ship Canal connects the Chicago River with the Des Plaines River, which runs to the west of the city. Chicago's history and economy are closely tied to its proximity to Lake Michigan. While the Chicago River historically handled much of the region's waterborne cargo, today's huge lake freighters use the city's Lake Calumet Harbour on the South Side. The lake also provides another positive effect, moderating Chicago's climate; making waterfront neighborhoods slightly warmer in winter and cooler in summer.

When Chicago was founded in 1833, most of the early building began around the mouth of the Chicago River, as can be seen on a map of the city's original 58 blocks. The overall grade of the city's central, built-up areas, is relatively consistent with the natural flatness of its overall natural geography, generally exhibiting only slight differentiation otherwise. The average land elevation is 579 ft (176 m) above sea level. The lowest points are along the lake shore at 577 ft (176 m), while the highest point, at 735 ft (224 m), is a landfill located in the Hegewisch community area on the city's far south side.

The Chicago Loop is the central business district but Chicago is also a city of neighborhoods. Lake Shore Drive runs adjacent to a large portion of Chicago's lakefront. Some of the parks along the waterfront include Lincoln Park, Grant Park, Burnham Park and Jackson Park. Twenty-nine public beaches are also found along the shore. Landfill extends into portions of the lake providing space for Navy Pier, Northerly Island, the Museum Campus, and large portions of the McCormick Place Convention Centre. Most of the city's high-rise commercial and residential buildings can be found close to the waterfront.

An informal name for the Chicago metropolitan area is Chicagoland, used primarily by copywriters, advertising agencies, and traffic reporters. There is no precise definition for the term "Chicagoland," but it generally means the city and its suburbs together. The Chicago Tribune, which coined the term, includes the city of Chicago, the rest of Cook County, eight nearby Illinois counties: Lake, McHenry, DuPage, Kane, Kendall, Grundy, Will and Kankakee, and three counties in Indiana: Lake, Porter, and LaPorte. The Illinois Department of Tourism defines Chicagoland as Cook County without the city of Chicago, and only Lake, DuPage, Kane and Will counties. The Chicagoland Chamber of Commerce defines it as all of Cook and DuPage, Kane, Lake, McHenry and Will counties.

Climate

The city lies within the humid continental climate zone, and experiences four distinct seasons. Summers are warm and humid , with a July daily average of 75.5 °F (24.2 °C). In a normal summer temperatures exceed 90 °F (32 °C) on 21 days. Winters are cold, snowy, and windy, with some sunny days, and with a January average of 23.5 °F (−4.7 °C). Temperatures often (43 days) stay below freezing for an entire day, and subzero lows occur on eight nights per year. Spring and fall are mild seasons with low humidity.

According to the National Weather Service, Chicago's highest official temperature reading of 107 °F (42 °C) was recorded on June 1, 1934 and July 11, 1936, both at Midway Airport. The lowest temperature of −27 °F (−33 °C) was recorded on January 20, 1985, at O'Hare Airport. The city can experience extreme winter cold spells that may last for several consecutive days.

Climate data for Chicago (Midway Airport), 1981–2010 normals
Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Record high °F (°C)	67 (19)	75 (24)	86 (30)	92 (33)	102 (39)	107 (42)	109 (43)	104 (40)	102 (39)	94 (34)	81 (27)	72 (22)	109 (43)
Average high °F (°C)	32.1 (0.1)	36.5 (2.5)	47.6 (8.7)	60 (15.6)	70.9 (21.6)	80.6 (27)	84.8 (29.3)	82.6 (28.1)	75.8 (24.3)	63.2 (17.3)	49.1 (9.5)	35.8 (2.1)	59.9 (15.5)
Average low °F (°C)	18.5 (−7.5)	22.2 (−5.4)	31.2 (−0.4)	41.3 (5.2)	51.2 (10.7)	61.4 (16.3)	66.9 (19.4)	65.7 (18.7)	57.5 (14.2)	45.5 (7.5)	34.7 (1.5)	22.7 (−5.2)	43.2 (6.2)
Record low °F (°C)	−25 (−32)	−20 (−29)	−7 (−22)	10 (−12)	28 (−2)	35 (2)	46 (8)	43 (6)	29 (−2)	20 (−7)	−3 (−19)	−20 (−29)	−25 (−32)
Precipitation inches (mm)	2.05 (52.1)	1.93 (49)	2.73 (69.3)	3.63 (92.2)	4.12 (104.6)	4.06 (103.1)	4.01 (101.9)	3.99 (101.3)	3.31 (84.1)	3.23 (82)	3.42 (86.9)	2.57 (65.3)	39.05 (991.9)
Snowfall inches (cm)	11.6 (29.5)	9.6 (24.4)	5.5 (14)	1 (2.5)	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)	0.1 (0.3)	1.3 (3.3)	8.7 (22.1)	37.8 (96)
Avg. precipitation days (≥ 0.01 in)	10.7	8.8	11.2	11.1	11.4	10.3	9.9	9	8.2	10.2	11.2	11.1	123.1
Avg. snowy days (≥ 0.1 in)	8.4	5.7	3.8	0.7	0	0	0	0	0	0.1	1.8	6.7	27.3
Percent possible sunshine	46	46	51	54	62	68	69	66	60	56	38	37	56
Source: NOAA (percent sunshine 1961–1990 at O'Hare), National Climatic Data Centre (records)

Cityscape

Chicago Landmarks Apartments Culture Education Historic Districts Houses Memorials and Monuments Municipal Skyscrapers Transportation Worship

Architecture

The outcome of the Great Chicago Fire led to the largest building boom in the history of the nation. Perhaps the most outstanding of these events was the relocation of many of the nation's most prominent architects from New England to the city for construction of the 1893 World Columbian Exposition.

In 1885, the first steel-framed high-rise building, the Home Insurance Building, rose in Chicago, ushering in the skyscraper era. Today, Chicago's skyline is among the world's tallest and most dense. The nation's two tallest buildings are both located in Chicago; Willis Tower (formerly Sears Tower), and Trump International Hotel and Tower. The Loop's historic buildings include the Chicago Board of Trade Building, the Fine Arts Building, 35 East Wacker, and the Chicago Building, 860-880 Lake Shore Drive Apartments by Mies van der Rohe, along with many others. The Merchandise Mart, once first on the list of largest buildings in the world, and still listed as twentieth with its own ZIP code, stands near the junction of the North and South branches of the Chicago River. Presently, the four tallest buildings in the city are Willis Tower, Trump International Hotel and Tower, the Aon Centre (previously the Standard Oil Building), and the John Hancock Centre. Industrial districts, such as on the South Side, the areas along the Chicago Sanitary and Ship Canal, Chicago Southland, and Northwest Indiana are clustered.

Chicago gave its name to the Chicago School and was home to the Prairie School, movements in architecture. Multiple kinds and scales of houses, townhouses, condominiums, and apartment buildings can be found in Chicago. Large swaths of Chicago's residential areas away from the lake are characterized by bungalows built from the early 20th century through the end of World War II. Chicago is also a prominent centre of the Polish Cathedral style of church architecture. One of Chicago's suburbs, Oak Park, was home to the architect Frank Lloyd Wright.

One of the city's most famous thoroughfares, Western Avenue, is one of the longest urban streets in the world. Other famous streets include Belmont Avenue, Pulaski Road and Division Street. The City Beautiful movement inspired Chicago's Boulevards and Parkways.

Culture and contemporary life

The city's lakefront allure and nightlife has attracted residents and tourists alike. Over one-third of the city population is concentrated in the lakefront neighborhoods (from Rogers Park in the north to South Shore in the south). Two North Side neighborhoods in particular, Lakeview and the Andersonville area of the Edgewater neighbourhood, are home to many LGBT businesses and organizations. The area surrounding the North Side intersections of Halsted, Belmont, and Clark is a gay district known as " Boystown." The city has many upscale dining establishments as well as many ethnic restaurant districts. These include the Mexican villages, such as Pilsen on 18th street and La Villita on 26th street, the Puerto Rican enclave Paseo Boricua in the Humboldt Park neighbourhood, "Greektown" on South Halsted, "Little Italy" on Taylor Street, just west of Halsted, "Chinatown" on the near South Side, Polish fare reigns at Belmont-Central, "Little Seoul" on and around Lawrence Avenue, a cluster of Vietnamese restaurants on Argyle Street and South Asian (Indian/Pakistani) on Devon Avenue.

Downtown is the centre of Chicago's cultural, commercial and financial institutions, and home to Grant Park and many of the city's skyscapers. Many of the city's financial institutions (e.g., CBOT, Chicago Fed) are located within a section of downtown called "The Loop", which is an eight block by five block square of city streets that are encircled by elevated rail tracks. The central commercial area often is portrayed, as in the map at right, to include parts of Near North Side and Near South Side, as well as the Loop. These areas contribute famous skyscrapers, shopping, museums, a stadium for the Chicago Bears and convention facilities. Similarly, the area just west of the Loop and the Chicago River contributes to the commercial core.

The North Side contains Lincoln Park, a 1,200-acre (490 ha) park stretching for 5.5 mi (8.9 km) along the waterfront with the Lincoln Park Zoo. The River North neighbourhood features the nation's largest concentration of contemporary art galleries outside of New York City. As a Polonia centre, due to the city having a very large Polish population, Chicago celebrates every Labor Day weekend at the Taste of Polonia Festival in the Jefferson Park area. The Chicago Cubs play in the North Side's Wrigleyville.

The South Side is home to the University of Chicago, and the Museum of Science and Industry. It also hosts one of the city's largest parades, the annual African American Bud Billiken Day parade. Burnham Park stretches along the waterfront of the South Side. Two of the city's largest parks are located here: Jackson Park, bordering the waterfront, hosted the World's Columbian Exposition in 1893 and is home of the aforementioned museum; slightly west sits Washington Park. U.S. automaker, Ford Motor Company, has an assembly plant located on the South Side. Also, most of the facilities of the Port of Chicago are here. The Chicago White Sox play at 35th Street.

The West Side holds the Garfield Park Conservatory, one of the largest collections of tropical plants of any US city. Prominent Latino cultural attractions found here include Humboldt Park's Institute of Puerto Rican Arts and Puerto Rican Day Parade, as well as the National Museum of Mexican Art and St. Adalbert's Church in Pilsen. The Near West Side holds the television production company of Oprah Winfrey's Harpo Studios and the University of Illinois at Chicago. The Chicago Bulls and Chicago Blackhawks call the West Side home at the United Centre sports arena.

Entertainment and performing arts

Chicago's theatre community spawned modern improvisational theatre. Two renowned comedy troupes emerged— The Second City and I.O. (formerly known as ImprovOlympic). Renowned Chicago theatre companies include the Steppenwolf Theatre Company (on the city's north side), the Goodman Theatre, and the Victory Gardens Theatre. Chicago offers Broadway-style entertainment at theaters such as Ford Centre for the Performing Arts Oriental Theatre, Bank of America Theatre, Cadillac Palace Theatre, Auditorium Building of Roosevelt University, and Drury Lane Theatre Water Tower Place. Polish language productions for Chicago's large Polish speaking population can be seen at the historic Gateway Theatre in Jefferson Park. Since 1968, the Joseph Jefferson Awards are given annually to acknowledge excellence in theatre in the Chicago area.

Classical music offerings include the Chicago Symphony Orchestra, recognized as one of the finest orchestras in the world, which performs at Symphony Centre. Also performing regularly at Symphony Centre is the Chicago Sinfonietta, a more diverse and multicultural counterpart to the CSO. In the summer, many outdoor concerts are given in Grant Park and Millennium Park. Ravinia Park, located 25 miles (40 km) north of Chicago, is also a favorite destination for many Chicagoans, with performances occasionally given in Chicago locations such as the Harris Theatre. The Civic Opera House is home to the Lyric Opera of Chicago. The Lithuanian Opera Company of Chicago was founded by Lithuanian Chicagoans in 1956, and presents operas in Lithuanian. It celebrated fifty years of existence in 2006, and operates as a not-for-profit organization. It is noteworthy for performing the rarely staged Rossini's William Tell (1986) and Ponchielli's I Lituani (1981, 1983 and 1991), and also for contributing experienced chorus members to the Lyric Opera of Chicago. The opera Jūratė and Kastytis by Kazimieras Viktoras Banaitis was presented in Chicago in 1996.

The Joffrey Ballet and Chicago Festival Ballet perform in various venues, including the Harris Theatre in Millennium Park. Chicago is home to several other modern and jazz dance troupes, such as the Hubbard Street Dance Chicago.

Other live music genre which are part of the city's cultural heritage include Chicago blues, Chicago soul, jazz, and gospel. The city is the birthplace of house music and is the site of an influential hip-hop scene. In the 1980s, the city was a centre for industrial, punk and new wave. This influence continued into the alternative rock of the 1990s. The city has been an epicenter for rave culture since the 1980s. A flourishing independent rock music culture brought forth Chicago indie. Annual festivals feature various acts such as Lollapalooza, the Intonation Music Festival and Pitchfork Music Festival.

Tourism

In 2008, Chicago attracted 32.4 million domestic leisure travelers, 11.7 million domestic business travelers and 1.3 million overseas visitors. These visitors contributed more than US$11.8 billion to Chicago's economy. Upscale shopping along the Magnificent Mile and State Street, thousands of restaurants, as well as Chicago's eminent architecture, continue to draw tourists. The city is the United States' third-largest convention destination. Most conventions are held at McCormick Place, just south of Soldier Field. The historic Chicago Cultural Centre (1897), originally serving as the Chicago Public Library, now houses the city's Visitor Information Centre, galleries and exhibit halls. The ceiling of its Preston Bradley Hall includes a 38 ft (12 m) Tiffany glass dome. Grant Park holds Millennium Park, Buckingham Fountain (1927), and the Art Institute of Chicago. The park also hosts the annual Taste of Chicago festival. In Millennium Park, there is the reflective Cloud Gate sculpture. Also, an outdoor restaurant transforms into an ice rink in the winter season. Two tall glass sculptures make up the Crown Fountain. The fountain's two towers display visual effects from LED images of Chicagoans' faces, along with water spouting from their lips. Frank Gehry's detailed, stainless steel band shell, the Jay Pritzker Pavilion, hosts the classical Grant Park Music Festival concert series. Behind the pavilion's stage is the Harris Theatre for Music and Dance, an indoor venue for mid-sized performing arts companies, including the Chicago Opera Theatre and Music of the Baroque.

Navy Pier, located just east of Streeterville, is 3,000 ft (910 m) long and houses retail stores, restaurants, museums, exhibition halls and auditoriums. Its 150-foot (46 m) tall Ferris wheel is one of the most visited landmarks in the Midwest, attracting about 8 million people annually.

In 1998, the city officially opened the Museum Campus, a 10-acre (4.0 ha) lakefront park, surrounding three of the city's main museums, each of which is of national importance: the Adler Planetarium & Astronomy Museum, the Field Museum of Natural History, and the Shedd Aquarium. The Museum Campus joins the southern section of Grant Park, which includes the renowned Art Institute of Chicago. Buckingham Fountain anchors the downtown park along the lakefront. The University of Chicago Oriental Institute has an extensive collection of ancient Egyptian and Near Eastern archaeological artifacts. Other museums and galleries in Chicago include the Chicago History Museum, the DuSable Museum of African American History, the Museum of Contemporary Art, the Peggy Notebaert Nature Museum, the Polish Museum of America, the Museum of Broadcast Communications and the Museum of Science and Industry.

The top activity while visitors tour Chicago for leisure is entertainment, approximately 33% of all leisure travelers. Facilities such as McCormick Place and the Chicago Theatre contribute to this percentage.

Parks

When Chicago was incorporated in 1837, it chose the motto Urbs in Horto, a Latin phrase which translates into English as "City in a Garden". Today, the Chicago Park District consists of 552 parks with over 7,300 acres (3,000 ha) of municipal parkland. There are 33 sand Chicago beaches, a plethora of museums, two world-class conservatories, 16 historic lagoons, and 10 bird and wildlife gardens. Lincoln Park, the largest of the city's parks, covers 1,200 acres (490 ha) and has over 20 million visitors each year, making it second only to Central Park in New York City in number of visitors. With berths for more than 5,000 boats, the Chicago Park District operates the nation's largest municipal harbour system; even larger than systems in cities such as New York City, Los Angeles, or Miami. In addition to ongoing beautification and renewal projects for the existing parks, a number of new parks have been added in recent years, such as the Ping Tom Memorial Park in Chinatown, DuSable Park on the Near North Side, and most notably, Millennium Park in a section of one of Chicago's oldest parks, Grant Park in the Chicago Loop.

The wealth of greenspace afforded by Chicago's parks is further augmented by the Cook County Forest Preserves, a network of open spaces containing forest, prairie, wetland, streams, and lakes that are set aside as natural areas which lie along the city's periphery, home to both the Chicago Botanic Garden in Glencoe and the Brookfield Zoo in Brookfield.

Cuisine

Chicago lays claim to a large number of regional specialties, all of which reflect the city's ethnic and working class roots. Included among these are its nationally renowned deep-dish pizza, This style is said to have originated at Pizzeria Uno. The Chicago-style thin crust is popular in the city as well. The number of authentic Chicago pizzerias specializing in the thin crust version is much higher, with many being "Mom and Pop" style shops.

The Chicago-style hot dog, typically a Vienna Beef dog loaded with an array of fixings that often includes neon green pickle relish, yellow mustard, pickled sport peppers, tomato wedges, dill pickle spear and topped off with celery salt. Ketchup on a Chicago hot dog is frowned upon by enthusiasts of the Chicago-style dog, but may prefer to add giardiniera.

There are several distinctly Chicago sandwiches, among them the Italian beef sandwich, which is thinly sliced beef slowly simmered au jus and served on an Italian roll with sweet peppers or spicy giardiniera. A popular modification is the Combo – an Italian beef sandwich with the addition of an Italian sausage. Another is the Maxwell Street Polish, a grilled or deep-fried kielbasa – on a hot dog roll, topped with grilled onions, yellow mustard, and hot sport peppers.

Ethnically originated creations include chicken Vesuvio, which started as an Italian specialty in the 1930s, with roasted bone-in chicken cooked in oil and garlic next to garlicky oven-roasted potato wedges and a sprinkling of green peas. Another is the Puerto Rican-influenced jibarito, a sandwich made with flattened, fried green plantains instead of bread. Yet another is the Greek saganaki, an appetizer of cheese served flambé at the table.

The Taste of Chicago in Grant Park runs from the final week of June through Fourth of July weekend. Hundreds of local restaurants take part.

A number of well-known chefs have restaurants in Chicago, including Charlie Trotter, Rick Tramonto, Grant Achatz, and Rick Bayless. In 2003, Robb Report named Chicago the country's "most exceptional dining destination."

The city is home to 23 Michelin starred restaurants, with Alinea and L2O receiving three stars.

Chicago features a wide selection of vegetarian cuisine, with 22 fully vegetarian restaurants and many vegetarian-friendly establishments within the city.

Religion

Due to its cosmopolitan history, Chicago has a rich blend of religious heritage as displayed by the architecture and institutions throughout the city. Christianity is predominant among the city's population represented by the various denominations including Catholic, Protestant, Oriental and Orthodox churches. The city also includes adherents of Judaism, Islam, Buddhism, Hinduism, Sikhism, the Bahá'í, and others. Because of this diversity, Chicago has a wealth of sacred architecture.

Through the city's size and notoriety, it has gained recognition as a religious centre. The city played host to the first two Parliament of the World's Religions in 1893 and 1993. Chicago contains many theological institutions, which include seminaries and colleges such as the Moody Bible Institute and DePaul University. Chicago is the seat of numerous religious leaders from a host of bishops of a wide array of Christian denominations as well as other religions. In the northern suburb of Wilmette, Illinois, is the Bahá'í Temple, the only temple for the Bahá'í Faith in North America. .

Sports

Chicago was named the Best Sports City in the United States by The Sporting News in 1993, 2006, 2010. The city is home to two Major League Baseball (MLB) teams: the Chicago Cubs of the National League (NL), who play in Wrigley Field on the North Side, and the Chicago White Sox of the American League (AL), who play in U.S. Cellular Field on the South Side. Chicago is the only city in North America that has had more than one MLB franchise every year since the AL began in 1900. The Chicago Machine, a member of Major League Lacrosse play at Toyota Park in Bridgeview, IL. The Chicago Bears, one of the last two remaining charter members of the National Football League (NFL), have won nine NFL Championships, including Super Bowl XX. The other remaining charter franchise, the Chicago Cardinals, also started out in the city, but are now known as the Arizona Cardinals. The Bears play their home games at Soldier Field just off the coast of Lake Michigan.

The Chicago Bulls of the National Basketball Association (NBA) are one of the most recognized basketball teams in the world. During the 1990s with Michael Jordan leading them, the Bulls took six NBA championships in eight seasons (only failing to do so in the two years of Jordan's absence). The Chicago Blackhawks of the National Hockey League (NHL), who began play in 1926, have won four Stanley Cups. The Blackhawks are the 2010 Stanley Cup champions, and hosted the 2009 NHL Winter Classic at Wrigley Field. Both the Bulls and Blackhawks play at the United Centre on the Near West Side. The Chicago Fire are members of Major League Soccer and reside at Toyota Park in suburban Bridgeview, after playing its first eight seasons at Soldier Field. The Fire have won one league title and four U.S. Open Cups since their founding in 1997.

The Chicago Marathon has been held each year since 1977 except for in 1987, when a half marathon was run in its place. The Chicago Marathon is one of five World Marathon Majors. In 1994, the United States hosted a successful FIFA World Cup with games played at Soldier Field on Chicago's downtown lakefront.

After a months long process that saw the elimination of several American and international cities, Chicago was selected on April 14, 2007, to represent the United States internationally in the bidding for the 2016 Summer Olympics. Chicago had previously hosted the 1959 Pan American Games and the 2006 Gay Games. Chicago was selected to host the 1904 Olympics, but they were transferred to St. Louis to coincide with the World's Fair. On June 4, 2008, the International Olympic Committee narrowed the field further and selected Chicago as one of four candidate cities for the 2016 games. On October 2, 2009, Rio de Janeiro was selected instead of Chicago.

Starting just off Navy Pier is Chicago Yacht Club's Race to Mackinac, a 330-mile (530 km) offshore sailboat race held each July that is the longest annual freshwater sailing distance race in the world. 2010 marks the 102nd running of the "Mac".

At the collegiate level, the greater Chicago area and has four national athletic conferences represented, the Big East Conference with DePaul University, and the Big Ten Conference with Northwestern University in Evanston are premier national conferences. Loyola University Chicago and the University of Illinois at Chicago play Division I sports as members of the Horizon League.

Literature

Chicago literature found its roots in the city's tradition of lucid, direct journalism, lending to a strong tradition of social realism. Consequently, most notable Chicago fiction focuses on the city itself, with social criticism keeping exultation in check. Writers such as Mike Royko, Studs Terkel, Stuart Dybek, Carl Sandburg, James T. Farrell, Upton Sinclair, Saul Bellow and John Guzlowski have all drawn the city's literary portrait in diverse ways, united by the fact that their observations brought the world's attention to focus on Chicago.

Economy

Chicago has the third largest gross metropolitan product in the United States—approximately US$506 billion according to 2007 estimates. The city has also been rated as having the most balanced economy in the United States, due to its high level of diversification. Chicago was named the fourth most important business centre in the world in the MasterCard Worldwide Centers of Commerce Index. Additionally, the Chicago metropolitan area recorded the greatest number of new or expanded corporate facilities in the United States for six out of the seven years from 2001 to 2008. The Chicago metropolitan area has the third largest science and engineering work force of any metropolitan area in the nation. In 2009, Chicago placed 9th on the UBS list of the world's richest cities. Chicago was the base of commercial operations for industrialists John Crerar, John Whitfield Bunn, Richard Teller Crane, Marshall Field, John Farwell, Morris Selz, Julius Rosenwald and many other commercial visionaries who laid the foundation for Midwestern and global industry.

Chicago is a major world financial centre, with the second largest central business district in the US The city is the headquarters of the Federal Reserve Bank of Chicago (the Seventh District of the Federal Reserve). The city is also home to major financial and futures exchanges, including the Chicago Stock Exchange, the Chicago Board Options Exchange (CBOE), and the Chicago Mercantile Exchange (the "Merc"), which is owned, along with the Chicago Board of Trade (CBOT) by Chicago's CME Group. The CME Group, in addition, owns the New York Mercantile Exchange (NYMEX), the Commodities Exchange Inc. (COMEX) and the Dow Jones Indexes. Perhaps due to the influence of the Chicago school of economics, the city also has markets trading unusual contracts such as emissions (on the Chicago Climate Exchange) and equity style indices (on the U.S. Futures Exchange). Chase Bank has its commercial and retail banking headquarters in Chicago's Chase Tower.

The city and its surrounding metropolitan area are home to the second largest labor pool in the United States with approximately 4.25 million workers. In addition, the state of Illinois is home to 66 Fortune 1000 companies, including those in Chicago. The city of Chicago also hosts 12 Fortune Global 500 companies and 17 Financial Times 500 companies. The city claims one Dow 30 company: aerospace giant Boeing, which moved its headquarters from Seattle to the Chicago Loop in 2001. Two more Dow 30 companies, Kraft Foods and McDonalds are in Chicago suburbs, as are the technology spin-offs of Motorola. Chicago is also home to United Continental Holdings and its United Airlines.

Manufacturing, printing, publishing and food processing also play major roles in the city's economy. Several medical products and services companies are headquartered in the Chicago area, including Baxter International, Boeing, Abbott Laboratories, and the Healthcare Financial Services division of General Electric. Moreover, the construction of the Illinois and Michigan Canal, which helped move goods from the Great Lakes south on the Mississippi River, and of the railroads in the 19th century made the city a major transportation centre in the United States. In the 1840s, Chicago became a major grain port, and in the 1850s and 1860s Chicago's pork and beef industry expanded. As the major meat companies grew in Chicago many, such as Armour and Company, created global enterprises. Though the meatpacking industry currently plays a lesser role in the city's economy, Chicago continues to be a major transportation and distribution centre. Lured by a combination of large business customers, federal research dollars, and a large hiring pool fed by the area's universities, Chicago is also home to a growing number of startup companies like 37signals, Groupon, Doejo and Feedburner.

Late in the 19th century, Chicago was part of the bicycle craze, as home to Western Wheel Company, which introduced stamping to the production process and significantly reduced costs, while early in the 20th century, the city was part of the automobile revolution, hosting the Brass Era car builder Bugmobile, which was founded there in 1907. Chicago was also home to the Schwinn Bicycle Company.

Chicago is a major world convention destination. The city's main convention centre is McCormick Place. With its four interconnected buildings, it is the largest convention centre in the nation and third largest in the world. Chicago also ranks third in the U.S. (behind Las Vegas and Orlando) in number of conventions hosted annually.

Demographics

Historical populations
Census	Pop.		%±
1840	4,470		—
1850	29,963		570.3%
1860	112,172		274.4%
1870	298,977		166.5%
1880	503,185		68.3%
1890	1,099,850		118.6%
1900	1,698,575		54.4%
1910	2,185,283		28.7%
1920	2,701,705		23.6%
1930	3,376,438		25.0%
1940	3,396,808		0.6%
1950	3,620,962		6.6%
1960	3,550,404		−1.9%
1970	3,366,957		−5.2%
1980	3,005,072		−10.7%
1990	2,783,726		−7.4%
2000	2,896,016		4.0%

During its first 100 years as a city, Chicago grew at a rate that ranked among the fastest growing in the world. When founded in 1833, less than 200 people had settled on what was then the American frontier. By the time of its first census, seven years later, the population had reached over 4000. Within the span of forty years, the city's population grew from slightly under 30,000 in 1850 to over 1 million by 1890. By the close of the 19th century, Chicago was the fifth largest city in the world, and the largest of the cities that did not exist at the dawn of the century. Within fifty years of the Great Chicago Fire of 1871, the population had tripled to over 3 million, and reached its highest ever-recorded population of 3.6 million for the 1950 census.

As of the 2000 census, there were 2,896,016 people, 1,061,928 households, and 632,558 families residing within Chicago. More than half the population of the state of Illinois lives in the Chicago metropolitan area. The population density of the city itself was 12,750.3 /sq mi (4,922.9 /km²), making it one of the nation's most densely populated cities. There were 1,152,868 housing units at an average density of 5,075.8 /sq mi (1,959.8 /km²). Of the 1,061,928 households, 28.9% had children under the age of 18 living in them, 35.1% were married couples living together, 18.9% had a female householder with no husband present, and 40.4% were non-families. The median income for a household in the city was $38,625, and the median income for a family was $42,724. Males had a median income of $35,907 versus $30,536 for females. About 16.6% of families and 19.6% of the population lived below the poverty line.

According to the 2006–2008 American Community Survey, the population of Chicago is 2,851,206 people; the racial composition of the city was:

• 39.9% White ( Non-Hispanic Whites: 31.5%)
• 34.6% Black or African American
• 0.2% American Indian
• 4.9% Asian
• 18.6% from some other race
• 1.7% from two or more races
• Hispanics or Latinos (of any race) make up 27.8% of the total population (20.5%

are Mexican, 3.7% Puerto Rican, 0.3% Cuban, and 3.4% other Hispanic or Latino).

According to the 2008 American Community Survey 1-Year Estimates for Total Ancestry Reported, for the city of Chicago, the majority of residents, or 64% of 2,986,974 people, reported their ancestry as "other groups". Of the 36% of residents that reported their ancestries in groups that were measured by the U.S. Census Bureau, the largest groups, based on the total population, were: Irish (6.6%); German (6.5%); Polish (5.8%); Italian (3.5%); Assyrian (3.5%); English (2.0%); Sub-Saharan African (1.2%); American (1.1%); Russian (0.97%); Swedish (0.91%); French (except Basque) (0.9%); Arab (0.7%); Greek (0.6%); Dutch (0.5%); Norwegian (0.5%); Scottish (0.5%); European (0.5%); West Indian (0.5%); Lithuanian (0.4%); Ukrainian (0.38%); Czech (0.4%); Hungarian (0.3%); Scotch-Irish (0.2%); Welsh (0.2%); Danish (0.2%); French Canadian (0.2%); Slovak (0.2%); British (0.1%); Swiss (0.1%); and Portuguese (0.1%). The city also has a large Assyrian population, numbering as many as 80,000–120,000 and is the location of the seat of the head of the Assyrian Church of the East, Mar Dinkha IV.

Law and government

Chicago is the county seat of Cook County. The government of the City of Chicago is divided into executive and legislative branches. The Mayor of Chicago is the chief executive, elected by general election for a term of four years, with no term limits. The mayor appoints commissioners and other officials who oversee the various departments. In addition to the mayor, Chicago's two other citywide elected officials are the clerk and the treasurer.

The City Council is the legislative branch and is made up of 50 aldermen, one elected from each ward in the city. The council enacts local ordinances and approves the city budget. Government priorities and activities are established in a budget ordinance usually adopted each November. The council takes official action through the passage of ordinances and resolutions.

During much of the last half of the 19th century, Chicago's politics were dominated by a growing Democratic Party organization dominated by ethnic ward-heelers. During the 1880s and 1890s, Chicago had a powerful radical tradition with large and highly organized socialist, anarchist and labor organizations. For much of the 20th century, Chicago has been among the largest and most reliable Democratic strongholds in the United States, with Chicago's Democratic vote the state of Illinois has been " solid blue" in presidential elections since 1992. The citizens of Chicago have not elected a Republican mayor since 1927, when William Thompson was voted into office. The strength of the party in the city is partly a consequence of Illinois state politics, where the Republicans have come to represent the rural and farm concerns while the Democrats support urban issues such as Chicago's public school funding. Chicago contains close to 25% of the state's population, and as such, eight of Illinois' nineteen U.S. Representatives have part of Chicago in their districts.

Former Chicago Mayor Richard J. Daley's mastery of machine politics preserved the Chicago Democratic Machine long after the demise of similar machines in other large U.S. cities. During much of that time, the city administration found opposition mainly from a liberal "independent" faction of the Democratic Party. The independents finally gained control of city government in 1983 with the election of Harold Washington. Since 1989, Chicago has been under the leadership of Richard M. Daley, the son of Richard J. Daley. Because of the dominance of the Democratic Party in Chicago, the Democratic primary vote held in the spring is generally more significant than the general elections in November.

City planning

Chicago has four main sections: Downtown (which contains the Loop), the North Side, the South Side, and the West Side. The three sides of the city are represented on the Flag of Chicago by three horizontal white strips. These sections can further be informally subdived or grouped, for example as shown on the map (right). Further sectional references are the Northwest side and the Southwest side. In the late 1920s, sociologists at the University of Chicago subdivided the city into 77 distinct community areas, which can further be subdivided into over 200 neighborhoods.

The central commercial area often is portrayed, as in the map at right, to include parts of Near North Side and Near South Side, as well as the Loop. The North Side is the most densely populated residential section of the city and many high-rises are located on this side of the city along the lakefront. The South Side is the largest section of the city, encompassing roughly 60% of the city's land area. The South Side contains the University of Chicago and most of the facilities of the Port of Chicago.

Chicago's streets were laid out in a street grid that grew from the city's original townsite plat. Streets following the Public Land Survey System section lines later became arterial streets in outlying sections. As new additions to the city were platted, city ordinance required them to be laid out with eight streets to the mile in one direction and 16 in the other direction. The grid's regularity would provide an efficient means to develop new real estate property. A scattering of diagonal streets, many of them originally Indian trails, also cross the city. Many additional diagonal streets were recommended in the Plan of Chicago, but only the extension of Ogden Avenue was ever constructed.

Crime

Murders in the city peaked first in 1974, with 970 murders when the city's population was over three million people (resulting in a murder rate of around 29 per 100,000), and again in 1992 with 943 murders, resulting in a murder rate of 34 per 100,000. Chicago, along with other major US cities, experienced a significant reduction in violent crime rates through the 1990s, eventually recording 448 homicides in 2004, the lowest total since 1965 (15.65 per 100,000.) Chicago's homicide tally remained steady throughout 2005, 2006, and 2007 with 449, 452, and 435 respectively.

In 2008, murders rebounded to 510, 2^nd highest in the country, breaking 500 for the first time since 2003. For 2009 the murder count was down about 10% for the year, to 458.

2010 saw Chicago's murder rate at its lowest levels since 1965. Overall, 435 homicides were recorded for the year, a 5% decrease from 2009.

Education

Schools and libraries

There are 675 public schools, 394 private schools, 83 colleges, and 88 libraries in the Chicago proper. Chicago Public Schools (CPS) is the governing body of the school district that contains over 600 public elementary and high schools citywide, including several selective-admission magnet schools. There are 9 selective enrollment high schools in the Chicago Public Schools. They are designed to meet the needs of Chicago’s most academically advanced students. The schools offer a rigorous curriculum with mainly honours and Advanced Placement (AP) courses. Northside College Preparatory High School is ranked number one in the city of Chicago. Whitney M. Young Magnet High School is ranked number two. The Chicago high school rankings are determined by the average test scores on state achievement tests. The district, with an enrollment exceeding 400,000 students (2005 stat.), ranks as the third largest in the US

Chicago's private schools are largely run by religious groups, with the two largest systems being the Catholic and Lutheran schools. The Roman Catholic Archdiocese of Chicago operates the city's Catholic schools, including the Jesuit preparatory schools. Some of the more prominent Catholic schools are: De La Salle Institute, Gordon Technical High School, Cristo Rey Jesuit High School, Brother Rice High School, St. Ignatius College Preparatory School, St. Scholastica Academy, Mount Carmel High School, Mother McAuley Liberal Arts High School, Marist High School, St. Patrick High School and Resurrection High School. In addition to Chicago's network of 32 Lutheran schools, there are also several private schools run by other denominations and faiths, such as the Ida Crown Jewish Academy in West Ridge. Additionally, a number of private schools are run in a completely secular educational environment, such as the Latin School of Chicago, the University of Chicago Laboratory Schools in Hyde Park, the Francis W. Parker School, the Chicago City Day School in Lake View, the Feltre School in River North and the Morgan Park Academy. Chicago is also home of the private Chicago Academy for the Arts, a high school focused on six different categories of the arts, such as Media Arts, Visual Arts, Music, Dance, Musical Theatre and Theatre.

The Chicago Public Library system operates 79 public libraries including the central library, two regional libraries, and numerous branches distributed throughout the city..

Colleges and universities

Since the 1850s, Chicago has been a world centre of higher education and research with several universities that are in the city proper or in the immediate environs. These institutions consistently rank among the top "National Universities" in the United States, as determined by U.S. News & World Report. Three top-tier research ( RU/VH) universities are found in or adjacent to the city: the University of Chicago; Northwestern University; and, the University of Illinois at Chicago. Other selective national universities include the Illinois Institute of Technology; Loyola University Chicago; and, DePaul University. Other notable schools include: Chicago State University; the School of the Art Institute of Chicago, the Illinois Institute of Art - Chicago East–West University; National-Louis University; North Park University; Northeastern Illinois University; Columbia College Chicago; Robert Morris University; Roosevelt University; Saint Xavier University; Dominican University; and Rush University.

William Rainey Harper, the first president of the University of Chicago, was instrumental in the creation of the junior college concept, establishing nearby Joliet Junior College as the first in the nation in 1901. His legacy continues with the multiple community colleges in the Chicago proper, including the seven City Colleges of Chicago, Richard J. Daley College, Kennedy–King College, Malcolm X College, Olive–Harvey College, Harry S Truman College, Harold Washington College and Wilbur Wright College, in addition to the privately held MacCormac College.

Chicago proper also has a large concentration of graduate schools, seminaries and theological schools such as the Adler School of Professional Psychology, The Chicago School of Professional Psychology, the Catholic Theological Union, Moody Bible Institute and the University of Chicago Divinity School.

Transportation

Chicago is a major transportation hub in the United States. It is an important component in global distribution, as it is the third largest inter-modal port in the world after Hong Kong and Singapore.

Rail

Six of the seven Class I railroads meet in Chicago, with the exception being the Kansas City Southern Railway. As of 2002, severe freight train congestion caused trains to take as long to get through the Chicago region as it took to get there from the West Coast of the country (about 2 days). About one-third of the country's freight trains pass through the city, making it a major national bottleneck. Announced in 2003, the Chicago Region Environmental and Transportation Efficiency (CREATE) initiative is using about $1.5B in private railroad, state, local, and federal funding to improve rail infrastructure in the region to reduce freight rail congestion by about one third. This is also expected to have a positive impact on passenger rail and road congestion, as well as create new greenspace.

Chicago is one of the largest hubs of passenger rail service in the nation. Many Amtrak long distance services originate from Union Station. The services terminate in San Francisco, Washington D.C., New York City, Indianapolis, New Orleans, Portland, Seattle, Milwaukee, Quincy, St. Louis, Carbondale, Boston, Grand Rapids, Port Huron, Pontiac, Los Angeles, and San Antonio. An attempt was made in the early 20th century to link Chicago with New York City via the Chicago – New York Electric Air Line Railroad. Parts of this were built, but it was ultimately never completed.

Freeways

Nine interstate highways run through Chicago and its suburbs. Segments that link to the city centre are named after influential politicians, with four of them named after former U.S. Presidents. When referring to the expressways, local citizens tend to use the names of the expressways rather than the interstate numbers, primarily because the names denote certain sections of the interstate(s).

The Kennedy Expressway and the Dan Ryan Expressway are the busiest state maintained routes in the City of Chicago and its suburbs.

Public transportation

The Regional Transportation Authority (RTA) coordinates the operation of the three service boards: CTA, Metra, and Pace.

The Chicago Transit Authority (CTA) handles public transportation in the city of Chicago and a few adjacent suburbs outside of the Chicago city limits. The CTA operates an extensive network of buses and a rapid transit elevated and subway system known as the Chicago 'L' (for "elevated"), with lines designated by colors. These rapid transit lines also serve both Midway and O'Hare Airports. The CTA's rail lines consist of the Red, Blue, Green, Orange, Brown, Purple, Pink, and Yellow lines. Both the Red and Blue lines offer 24 hour service which makes Chicago one of the few cities in the world (and one of only three cities in the United States of America) to offer rail service every day of the year for 24 hours around the clock. A new subway/elevated line, the Circle Line, is also in the planning stages by the CTA.

Metra, the nation's second-most used passenger regional rail network, operates an 11-line commuter rail service in Chicago and its suburbs. The Metra Electric Line shares its trackage with Northern Indiana Commuter Transportation District's South Shore Line, which provides commuter service between South Bend and Chicago. Pace provides bus and paratransit service in over 200 surrounding suburbs with some extensions into the city as well. A 2005 study found that one quarter of commuters used public transit.

Greyhound Lines provides inter-city bus service to and from the city, and Chicago is also the hub for the Midwest network of Megabus (North America).

Cycling

Chicago offers a wide array of bicycle transportation facilities and events, including several miles of on-street bike lanes, 10,000 bike racks, 170 miles (270 km) of bike route signage, a state-of-the-art central bicycle commuter station in Millennium Park and the annual Bike Chicago festival. The network has 100 mi (160 km) of on-street bike lanes and 50 mi (80 km) of off-street trails. Bicycles are permitted on CTA trains and their fleet of over 2,000 buses that have been equipped with racks that carry bikes. The successes of the Bike Program are due in large part to Mayor Daley's leadership and the incorporation of bicycling into the mandates and programs of the Chicago Department of Transportation, CTA, Chicago Park District and the Mayor's Office of Special Events, in partnership with the Active Transportation Alliance. The Chicago Park District maintains an 18-mile (29 km) multi-use path, popular with bicycle commuters, along Lake Michigan called the Lakefront Trail.

Air transportation

Chicago is served by Midway International Airport on the South Side and O'Hare International Airport, the world's second busiest airport, on the far Northwest Side. In 2005, O'Hare was the world's busiest airport by aircraft movements and the second busiest by total passenger traffic (due to government enforced flight caps). Both O'Hare and Midway are owned and operated by the City of Chicago. Gary/Chicago International Airport, located in nearby Gary, Indiana, serves as the third Chicago area airport. Chicago is the world headquarters for United Airlines, the world's second-largest airline by revenue-passenger-kilometers and the city is a hub for American Airlines. Midway is a hub for low-cost carrier Southwest Airlines.

Ports

The Port of Chicago consists of several major port facilities within the city of Chicago, Illinois operated by the Illinois International Port District (formerly known as the Chicago Regional Port District). The central element of the Port District, Calumet Harbour, is maintained by the U.S. Army Corps of Engineers.

Facilities

• Iroquois Landing Lakefront Terminal: at the mouth of the Calumet River, it includes 100 acres (0.40 km²) of warehouses and facilities on Lake Michigan with over 780,000 square meters (8,390,000 square feet) of storage.
• Lake Calumet terminal: located at the union of the Grand Calumet River and Little Calumet River 6 miles (9.7 km) inland from Lake Michigan. Includes three transit sheds totaling over 29,000 square meters (315,000 square feet) adjacent to over 900 linear meters (3000 linear feet) of ship and barge berthing.
• Grain (14 million bushels) and bulk liquid (800,000 barrels) storage facilities along Lake Calumet.
• The Illinois International Port district also operates Foreign Trade Zone #22, which extends 60 miles (97 km) from Chicago's city limits.

Infrastructure

Utilities

Electricity for most of northern Illinois is provided by Commonwealth Edison, also known as ComEd. Their service territory borders Iroquois County to the south, the Wisconsine border to the north, the Iowa border to the west and the Indiana border to the east. In northern Illinois, ComEd (a division of Exelon) operates the greatest number of nuclear generating plants in any US state. Because of this, ComEd reports indicate that Chicago receives about 75% of its electricity from nuclear power. Recently, the city started the installation of wind turbines on government buildings with the aim to promote the use of renewable energy.

Domestic and industrial waste was once incinerated but it is now landfilled, mainly in the Calumet area. From 1995 to 2008, the city had a blue bag program to divert certain refuse from landfills. In the fall of 2007 the city began a pilot program for blue bin recycling similar to that of other cities due to low participation rates in the blue bag program. After completion of the pilot the city will determine whether to roll it out to all wards.

Health systems

Chicago is home to the Illinois Medical District, on the Near West Side. It includes Rush University Medical Centre, the University of Illinois Medical Centre at Chicago, Jesse Brown VA Hospital, and John H. Stroger, Jr. Hospital of Cook County, the largest trauma-centre in the city.

The University of Chicago Medical Centre was ranked the fourteenth best hospital in the country by U.S. News & World Report. It is the only hospital in Illinois ever to be included in the magazine's "Honour Roll" of the best hospitals in the United States.

The Chicago campus of Northwestern University includes the Feinberg School of Medicine, Northwestern Memorial Hospital, Rehabilitation Institute of Chicago (rated best U.S. rehabilitation hospital by U.S. News & World Report), the new Prentice Women's Hospital, and Ann & Robert H. Lurie Children's Hospital of Chicago, which is currently under construction.

The University of Illinois College of Medicine at UIC is the largest medical school in the United States (2,600 students including those at campuses in Peoria, Rockford and Urbana–Champaign).

In addition, the Chicago Medical School and Loyola University Chicago's Stritch School of Medicine are located in the suburbs of North Chicago and Maywood, respectively. The Midwestern University Chicago College of Osteopathic Medicine is in Downers Grove.

The American Medical Association, Accreditation Council for Graduate Medical Education, Accreditation Council for Continuing Medical Education, American Osteopathic Association, American Dental Association, Academy of General Dentistry, American Dietetic Association, American Association of Nurse Anesthetists, American College of Surgeons, American Society for Clinical Pathology, American College of Healthcare Executives and the American Hospital Association, and Blue Cross and Blue Shield Association are all based in Chicago.

Telecommunications

Using only 3% of the total available bandwidth capacity and 13% of the available fibre pairs, Chicago area data centers move data for local, area, regional and international networks.

Sister cities

Chicago has twenty-eight Sister Cities and one Friendship City. Like Chicago, many of them are or were, the second city of their country, or they are the main city of a country that has had many immigrants settle in Chicago. Paris is a Partner City, due to the one sister city policy of their respective French commune.

To celebrate the sister cities, Chicago hosts a yearly festival in Daley Plaza, which features cultural acts and food tastings from the other cities. In addition, the Chicago Sister Cities program hosts a number of delegation and formal exchanges. In some cases, these exchanges have led to further informal collaborations, such as the academic relationship between the Buehler Centre on Aging, Health & Society at the Feinberg School of Medicine of Northwestern University and the Institute of Gerontology of Ukraine (originally of the Soviet Union), that was originally established as part of the Chicago-Kyiv sister cities program.

Warsaw (Poland) 1960 Milan (Italy) 1973 Osaka (Japan) 1973 Casablanca (Morocco) 1982 Shanghai (China) 1985 Shenyang (China) 1985 Gothenburg (Sweden) 1987 Accra (Ghana) 1989 Prague (Czech Republic) 1990 Kyiv (Ukraine) 1991 Mexico City (Mexico) 1991 Toronto (Canada) 1991 Birmingham (United Kingdom) 1993 Vilnius (Lithuania) 1993 Hamburg (Germany) 1994

Petah Tikva (Israel) 1994 Paris (France) 1996 – Partner City Athens (Greece) 1997 Durban (South Africa) 1997 Galway (Ireland) 1997 Moscow (Russia) 1997 Lucerne (Switzerland) 1998 Delhi (India) 2001 Amman (Jordan) 2004 Belgrade (Serbia) 2005 Lahore (Pakistan) 2007 Busan (South Korea) 2007 Bogotá (Colombia) 2009 São Paulo (Brazil) 2010