Hooper Hot Springs, Sand Dune Recreation

A literal oasis in southern Colorado west of the Grand Sand Dunes National Park, this complex is one of the numerous hot springs bubbling in the expansive San Luis Valley. In addition to a large outdoor pool, tucked to the side is an adults-only indoor pool and hot tubs inside a year-round atrium bursting with jungle-like greenery.

And if you’re making a long trek to the SLV for some of the other touristy things (alligator park, a UFO view tower, or an old-school drive-in), the site (also known as the Hooper hot springs) has camping and cabins available.