Best group event venues in Ontario, California

Cucamonga-Guasti Regional Park, located at 800 North Archibald Avenue in Ontario, California, is a popular tourist attraction offering 150 acres of outdoor recreation activities in an urban setting. Visitors can enjoy fishing in two lakes, a swim complex with water slides, splash pad, picnic tables, and group picnic shelters for events. The park also features Topgolf, an open-air venue with hitting bays, a rooftop terrace, and private event space. The park hosts various events and workshops throughout the year, including fishing workshops and derbies. It offers summer heat relief at the pool and water slides, which are open from Memorial Day weekend to Labor Day weekend. The park is also a great site for family gatherings, company picnics, and events, with covered picnic shelters and barbecue grills available for rent.