"Best. Pit Stop. Ever: Iron Mountain Hot Springs What's better than this? Colorado 's newest hot springs (they opened in July, 2015) boasts 16 small thermal pools on the bank of the Colorado River, and a large freshwater family pool heated to 95 degrees, with a sun deck and Sopris Cafe. The smaller pools contain a variety of minerals and are kept at a range of temperatures. Views are of the river, train tracks, and mall across the dry valley. You barely notice that the entire property borders the shoulder of Interstate-70, which of course, means, it's a perfect stopover for cross-state road trips, or as its own day trip from anywhere. Rates are $15–20 per person for access to the bathhouse, pools, and cafe."