Quick Answer: The Chicago Bears are a professional American football team based in Chicago. The Bears compete in the National Football League as a member of the National Football Conference North division. They are one of two remaining franchises from the NFL's founding in 1920, along with the Arizona Cardinals. The Bears play their home games at Soldier Field on the Near South Side, adjacent to Lake Michigan. The team headquarters, Halas Hall, is in the Chicago suburb of Lake Forest, Illinois. The Bears practice at adjoining facilities there during the season, and began hosting training camp at Halas Hall in 2020 after major renovations. The franchise was founded in Decatur, Illinois, on September 20, 1919, became professional on September 17, 1920, and moved to Chicago in 1921. The Bears played home games at Wrigley Field on Chicago's North Side through the 1970 season; they have played since then at Soldier Field.