United Center is an indoor arena on the Near West Side of Chicago, Illinois, United States. It is home to the Chicago Bulls of the National Basketball Association (NBA) and the Chicago Blackhawks of the National Hockey League (NHL). It is named after its corporate sponsor United Airlines, which has been based in Chicago since 2007 and has a hub at O'Hare International Airport. With a capacity of nearly 21,000, the United Center is the largest arena by capacity in the NBA, and second largest arena by capacity in the NHL. It also has a seating capacity of 23,500 for concerts.

The Near West Side, one of the 77 community areas of Chicago, is on the West Side, west of the Chicago River and adjacent to the Loop. The Great Chicago Fire of 1871 started on the Near West Side. Waves of immigration shaped the history of the Near West Side of Chicago, including the founding of Hull House, a prominent settlement house. In the 19th century railroads became prominent features. In the mid-20th century, the area saw the development of freeways centered in the Jane Byrne Interchange.