Splash Bay Indoor Water Park, Maumee

The roar of rushing of water echoes through the towering walls of Splash Bay Indoor Water Park, where slides, rivers, and pools stretch across a 35,000-square-foot facility. Kiddie pools ripple with whippersnappers clambering upon play structures and tumbling off giant lily pads, and inner tubes careen down a lazy river. After snaking and weaving riders across the rafters, three lofty slides fire their passengers out into pools below, and adults can lounge under a warm waterfall pouring into the giant hot tub.

Red Cross–certified lifeguards survey the scene all the while, quick to blow whistles at horseplay or beluga whales that have snuck through the hot-tub jets. On the upper deck, a snack bar peddles snacks and drinks, and arcade games glimmer, hum, and dole out prizes. Dried off guests can take advantage of the park's onsite hotel, complete with family suites and a restaurant.