Glenwood Springs, CO
Glenwood Hot Springs Resort
One of the world's largest hot springs pools anchors this historic 1888 resort in the heart of Glenwood Springs, pairing its famous Grand Pool with a smaller therapy…
Front Range · Idaho Springs, CO
Just off I-70 in Idaho Springs, this century-old property is famous for its geothermal vapor caves, tunnels dug into the mountainside where communal pools steam at over 108 degrees. Upstairs, a tropical greenhouse houses the main mineral swimming pool amid palm trees. Private indoor baths, outdoor tubs, mud treatments, and basic lodge rooms and cabins round out the options.
For day-use admission, popular resorts sell out on weekends — if the official site offers reservations, book ahead. Weekday visits are usually easier as walk-ins.
Many developed springs welcome families, but age rules, family hours, and adults-only pools vary by property. Check the official site for the current policy before visiting with children.
Start with 15–20 minutes, then cool off and hydrate before going back in. Hot mineral water dehydrates you faster than you expect — drink water between soaks and don't push through dizziness.
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