https://www.greatamericaparks.com/marriotts-great-america-in-gurnee-illinois-opened-for-the-first-time-50-years-ago-today/ 2026-05-29T17:31:09Z GREATAMERICAparks.com en Marriott’s Great America in Gurnee, Illinois opened for the first time 50 years ago today. 2026-05-29T13:36:15Z Blog