[2] It is the largest outdoor music venue in the United States.

The amphitheater has played host to many music festivals, including Anger Management Tour, Area Festival, Battle of San Bernardino Festival, Crüe Fest, Crüe Fest 2, Family Values Tour, Gigantour, H.O.R.D.E.

Tour on September 15, 1993, the show was recorded and was broadcast on Fox, entitled What's Love...?

On July 11, 2008, the San Manuel Casino announced that it had acquired a long-term agreement to the naming rights of the amphitheater, which was thereafter known as the San Manuel Amphitheater.

[1] Beginning in 2019, Garth Brooks had a three-year contract to perform an annual concert at the Glen Helen Amphitheater as part of his Stadium Tour.