About this Youtube video: Check out Chicago s Main Street in 360 Degrees - Driving Downtown - Chicago Illinois USA - Episode 42. Starting Point . Chicago is the third-most populous city in the United States. With over 2.7 million residents it is the most populous city in the state of Illinois and the Midwestern United States. The Chicago metropolitan area often referred to as Chicagoland has nearly 10 million people and is the third-largest in the U.S. The city is an international hub for finance commerce industry technology telecommunications and transportation O Hare International Airport is the second-busiest airport in the world when measured by aircraft traffic the region also has the largest number of U.S. highways and rail road freight. The city has one of the world s largest and most diversified economies with no single industry employing more than 14 of the workforce. In 2015 Chicago had over 52 million international and domestic visitors. Chicago s culture includes the visual arts novels film theater especially improvisational comedy and music particularly jazz blues soul gospel and house music. It also has professional sports teams in each of the major professional leagues. Chicago has many nicknames the best-known being the Windy City. Tourism In 2014 Chicago attracted 50.17 million domestic leisure travelers 11.09 million domestic business travelers and 1.308 million overseas visitors. These visitors contributed more than US 13.7 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. Sports The city has two Major League Baseball MLB teams the Chicago Cubs and the Chicago White Sox. The Chicago Bears one of the last two remaining charter members of the National Football League NFL have won nine NFL Championships including the 1985 Super Bowl XX. The Chicago Bulls of the National Basketball Association NBA is one of the most recognized basketball teams in the world. The Chicago Blackhawks of the National Hockey League NHL began play in 1926 and are one of the Original Six teams of the NHL. Economy Chicago is a major world financial center with the second-largest central business district in the United States. The city is the headquarters of the Federal Reserve Bank of Chicago the Seventh District of the Federal Reserve . The city has major financial and futures exchanges including the Chicago Stock Exchange the Chicago Board Options Exchange CBOE and the Chicago Mercantile Exchange. Architecture The destruction caused by the Great Chicago Fire led to the largest building boom in the history of the nation. In 1885 the first steel-framed high-rise building the Home Insurance Building rose in the city as Chicago ushered in the skyscraper era which would then be followed by many other cities around the world. Today Chicago s skyline is among the world s tallest and most dense. Cuisine Chicago lays claim to a large number of regional specialties that 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 also popular in the city. Infrastructure 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. .