Credit Union 1 Amphitheatre, located in Tinley Park, Illinois, was originally known as World Music Theatre when it opened in 1990. It is one of the largest music venues in the Chicago area. Over the years, the venue has undergone several name changes, including New World Music Theatre, Tweeter Center, First Midwest Bank Amphitheatre, and Hollywood Casino Amphitheatre, adopting its current name in 2023. The amphitheatre offers both reserved seating and lawn areas.