Allstate Arena is a multi-purpose arena in Rosemont, Illinois, United States. It is located near the intersection of Mannheim Road and Interstate 90, adjacent to the city limits of Chicago and O'Hare International Airport. The facility opened in 1980 as the Rosemont Horizon and seats 17,500 for basketball and 16,692 for ice hockey. The arena is home to the Chicago Wolves of the American Hockey League (AHL) and has served as the home arena for a number of other professional and collegiate teams, most notably the DePaul Blue Demons from 1980 through 2017.