Splash in to the Splash Shack for year round fun out of the sun. The Splash Shack is an indoor, micro-waterpark designed for the young and young at heart to slide, spray and play all day. The-first-of-its-kind waterpark houses an 8,000 square foot, 30-foot-tall interactive water play structure. Plus, with a temperature set to 82 degrees, it feels like summer even in the middle of winter. So leave the sunscreen behind and soak up the summer vibes, indoors.