Some of the notable hotels with indoor water parks include the Great Wolf Lodge chain and the Kalahari Resort in Wisconsin Dells, Wisconsin. The Wilderness Territory Waterpark Resort near Wisconsin Dells, Wisconsin, is one of the largest indoor water parks in the United States, spreading out over 600 acres. The Avalanche Bay Indoor Water Park in Boyne Falls, Michigan, has a surf simulator, the Rip Zone, that lets guests try their balance at surfing or boogie boarding. Internationally, Tropical Islands in Brandenburg Germany and World Waterpark in Alberta, Canada, are among the world's largest water parks.
The Great Wolf Lodge is a chain of hotels specializing in indoor water park experiences. The chain has 12 parks spread across the country, with the Great Wolf Lodge in Niagara Falls being the largest. The water park features thrill rides like the Canada Vortex which has a 40-foot drop, twisting waterslides, a lazy river and Chipmunk Cove, a separate play area for young children. The Kalahari Resort in Wisconsin Dells boasts the largest indoor water park in this resort town known as the "Waterpark Capital of the World." Features at this water park include a 920-foot lazy river and Master Blaster, the world's first indoor water roller coaster.
The Kalahari Resort in Sandusky, Ohio, has a selection of African-themed water slides and thrill rides. It is famous for the Zip Coaster, which takes riders through 500 feet of drops and turns in only 30 seconds.
Splash Lagoon in Erie, Pennsylvania, is affiliated with four different hotels, giving families a range of lodging options for their water-park vacations. The 102,000-square-foot park has a good selection of water rides as well, and the tropical theme provides a nice escape from the area's cold winters.
Splash Resort in Panama City, Florida, is right next to the beach and only a short drive from Shipwreck Island Water Park, but the condo resort also features an indoor park for its winter guests. Children can enjoy water slides and a dive-in movie theater while parents enjoy the fitness center or the Jacuzzi.
Tropical Islands in Brandenburg, Germany, ranks as the largest indoor water park resort in the world, as of 2015, with over 710,000 square feet of space. The park is housed in massive former airship hanger on a military base. The dome-shaped building houses a water park and a tropical rainforest, tethered balloon rides and mini-golf course. World Waterpark in Alberta, Canada, is the largest indoor waterpark in North America, as of 2015, and features 17 waterslides, a zipline and a surfing simulator.