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. 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.

Opening in 1994, the United Center replaced the Chicago Stadium, which was located across the street. The first event held at the arena was WWF SummerSlam. Due to the lockout, the Blackhawks did not move in until January 1995. In 1996, the United Center hosted the Democratic National Convention.