Originally used as a winter camp by the Shoshones, Crystal Hot Springs is the world’s largest, natural hot and cold springs. Mixing water from the two springs allows for a variety of pools with temperatures ranging from 80°F to 105°F. The complex, which is about 8 miles north of Brigham City, has its own campground, a series of three hot tubs, a large soaker pool, a cold freshwater swimming pool, tow water slides and a lap pool. The complex remains open year-round, but hours vary, so it’s best to call ahead.