Nothing beats a warm soak outside on a crisp day. You'll have to ramble down dirt roads, hike into canyons, and cross suspension bridges to get to these hidden hot springs. But the effort will make the "ahhh" even sweeter when you finally slip into a steamy bath set in the middle of a thick forest or beneath the glittery Milky Way. Here are 10 of our favorites in the U.S. and Canada.
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