Overlooking the mighty Colorado River in the historic town of Glenwood Springs, Iron Mountain Hot Springs offers a more intimate and varied soaking experience than the nearby (and better known) Glenwood Hot Springs Resort. You can choose your own adventure at the 16 geothermal mineral soaking pools here (ages 5 and up only), all connected by heated walkways. Or take younger kids to the family pool and adjacent jetted spa, where the water hovers around the 100°F mark. All of the property’s mineral pools are fed from on-site springs, with no chemicals added. Called Mother Lode, the hottest mineral pool maxes out at around 108°F (there are markers outside each pool to let you know the heat intensity to expect). You can tickle your toes in reflexology pools with smooth river rocks at the bottom. And for the best views, look for the Garnet and Diamond pools, which have infinity edges and hang over the river in a way that might make you feel like you’re actually soaking in it.