Credit Union 1 Amphitheatre is an outdoor music venue located in Tinley Park, Illinois, that opened in 1990 and was built by Gierczyk Development. It is one of the largest music venues in the Chicago area, with a capacity of up to 28,000 spectators: 11,000 reserved seats and 17,000 lawn seats.
Location: Tinley Park, Illinois
Owner: Live Nation
Capacity: 28,739
Opened: June 2, 1990
Former names: World Music Theatre (1990–1995) · New World Music Theatre (1995–2001) · Tweeter Center (2001–2006) · First Midwest Bank Amphitheatre (2006–2015) · Hollywood Casino Amphitheatre (2015–2023)