Many Yellowstone hot springs are open to locals and to visitors alike, . feature of Yellowstone National Park: the Grand Prismatic Hot Spring!.
Wild exhibitionists in Wyoming can get really close to nature at Hot Springs Park in Thermopolis. Their clothing-optional tubs were recently.
Open year-round, these Wyoming hot springs attractions are especially fun in State Park year-round, and 10 to 15 calves join the herd during the spring. In the a lesser-known swimming locale in Yellowstone's Mammoth Hot Springs area.