United Center is an indoor arena on the Near West Side of Chicago, Illinois. 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 for its corporate sponsor United Airlines. 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.
Opened in 1994, the United Center replaced the West Side's Chicago Stadium ("the madhouse on Madison"), which was opened in 1929 and located across Madison Street from the center. It is owned by the Reinsdorf and Wirtz families, owners of the teams that use the arena, and which also own much of the surrounding land. The first event held at the arena was WWF SummerSlam, and it hosts hundreds of sporting events, and concerts a year. The center also hosted the Democratic National Convention in 1996 and 2024. The arena served as the municipal emergency hub in the early days of the COVID-19 pandemic of 2020.