Performed at the venue together and released Arch Allies Live at Riverport and releasing 2 single-disc versions for Styx and one for REO. On June 9, 2000, the bands REO Speedwagon and Styx Guns and Roses Riot - On Jconcert at the then-brand new Riverport Amphitheatre (now known as Hollywood Casino Amphitheatre) in nearby Maryland Heights, Mo., erupted into a violent and bloody riot, injuring 65 people - including 25 police officers - and resulting in dozens of arrests and hundreds of thousands of dollars in property damage. Louis area still call it by its original name 'Riverport'. Even with naming rights changes, many in the St. The length of the agreement was not disclosed. Venue owner Live Nation announced December 17, 2014, that they had signed a multiyear agreement with Hollywood Casino in Maryland Heights, which is owned and operated by Penn National Gaming, to be the amphitheater's title sponsor. Verizon Wireless then purchased the naming rights in November 2006. In 2002, UMB Bank acquired the naming rights to the venue for five years. SFX corporate successor Live Nation Entertainment continues to own and operate the venue. In 1998, the local promoter Contemporary Group, who built the amphitheater, was acquired by SFX.

Shortly after opening, the amphitheater became the site of the infamous Riverport Riot, July 2, 1991, during a Guns N' Roses concert, during their Use Your Illusion Tour.

The venue was built for approximately $12 million, and opened on June 14, 1991, with a performance by Steve Winwood. The Hollywood Casino Amphitheatre (originally Riverport Amphitheatre and formerly the UMB Bank Pavilion and Verizon Wireless Amphitheater) is an outdoor concert venue in Maryland Heights, Missouri, near St. Verizon Wireless Amphitheater (2007–2014)

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