The venue which opened back in 1991 and has earned a stellar reputation for attracting all of the biggest musical acts in the world to its stage during the spring and summer months. 'Now known as Hollywood Casino Amphitheater, the former Verizon Wireless Amphitheater in Maryland Heights, Missouri has long been one of the most popular destinations for music fans in the area. 'Hollywood Casino Amphitheatre Tinley Park History'