Six Flags Great America in Gurnee, Illinois, launched its 50th anniversary season Saturday to enthusiastic crowds, marking half a century since the park first opened its gates in 1976. The park rolled out a weekend of special programming, including retrospective exhibits, limited-edition commemorative merchandise, and the return of classic rides that long-time visitors remembered from the park's early decades.

Park officials reported strong advance ticket sales in the weeks leading up to the opening, with Saturday's attendance on pace to be among the highest for any opening weekend in recent memory. Families drove from across the Chicago metropolitan area and neighbouring states, with some visitors noting they had attended the original opening as children and were now bringing their own grandchildren.

The anniversary programming includes a dedicated 'Then and Now' walkthrough exhibit in the park's central plaza, showcasing archival photos, original ride vehicles, and guest testimonials collected over the past year via a social media campaign. The exhibit is scheduled to remain open through the summer season.

Six Flags Entertainment Group, which has been working to revitalise its parks following the brand's broader restructuring, is positioning Great America's milestone as a cornerstone marketing moment for 2026. Executives confirmed that a series of weekend-themed events tied to each decade of the park's history will roll out monthly through October.

Local hospitality businesses in Gurnee and surrounding Lake County reported a noticeable uptick in hotel bookings and restaurant reservations linked to the anniversary weekend, with the Lake County Convention and Visitors Bureau calling it a welcome boost to the region's spring tourism economy.