Kalahari Resorts (Wisconsin Dells, Wisconsin) As the largest indoor water park in the United States, Kalahari Resorts in Wisconsin Dells features a massive 125,000 square feet of water attractions.
Wilderness Resort (Wisconsin Dells, Wisconsin) Known as America's largest waterpark resort, Wilderness Resort offers four indoor water parks totaling over 250,000 square feet.
Great Wolf Lodge (Various Locations) With multiple locations across the country, Great Wolf Lodge is renowned for its family-friendly indoor water parks.
Aquatopia Indoor Waterpark at Camelback Resort (Tannersville, Pennsylvania) Located in the Pocono Mountains, Aquatopia spans 125,000 square feet and features 13 water slides, a wave pool, a lazy river, and an indoor/outdoor hot tub.
Kalahari Resorts (Pocono Mountains, Pennsylvania) This Kalahari location is one of the largest indoor water parks in the country, covering 220,000 square feet.
Massanutten Resort (McGaheysville, Virginia) Massanutten's indoor water park offers a variety of attractions, including the Massanutten Meltdown, an interactive water play structure, the Pipeline, a fast-paced water slide, and the FlowRider for surfing.