The hot bath has long been used as treatment for releasing stress and promoting better health. This isn't an old wives' tale, especially when it comes to natural hot springs; their use dates back to prehistoric times, and such mineral-rich springs have since been used to relax muscles, promote sleep, boost circulation and even help curb skin problems. There's a reason why such a bath feels so good—it lets you unwind completely and offers nothing but benefits.
Our list of must-visit hot springs reaches from the wilds of Alaska to the country's east and west coasts; there's even a Colorado ghost town mentioned here. These hot springs are found in remote flatlands, at luxurious resorts, at historic bathing facilities (one was visited by Thomas Jefferson) and at the end of a hike. Whatever the mode of discovery, a soothing experience awaits—but always exercise caution and test the waters before dipping in any natural hot spring.