The Wilderness Resort is America's Largest Waterpark Resort with 4 indoor and 4 outdoor waterparks totaling more than 12 football fields of water fun! This Wisconsin Dells resort is family-friendly and has something for everyone. The Resort is also home to Sundara Spa, an adults-only resort in Wisconsin Dells, and is one of the top spas in the United States. Wild Rock Golf Club, designed by Hurdzan and Fry, is also located on the premises.