FAIRBANKS, Alaska - Chena Hot Springs became a famous stopover for ailing prospectors in the 1890s. Today, more than 110 years later, the springs are a popular resort featuring indoor ...

1. Chena Hot Springs Fairbanks, Fairbanks, Alaska Chena Hot Springs in Fairbanks, Alaska, is popular for the mineral-rich, natural water that fills the outdoor lake.

(Courtesy of Jonas Bare) Jonas Bare and longtime friend and travel partner Cynthia Hovsepian set out for a day hike from Chena Hot Springs Resort, east of Fairbanks, on Aug. 10.

And if 16 hot pools aren’t enough for you, Colorado has a plethora of geothermal waters to explore, including the Glenwood Hot Springs Resort, boasting the world’s largest hot springs pool.