Although this incredible national park has thousands of geothermal features, you'll need to travel outside the park to find ...

Catie Leary writes and curates visual stories about science, animals, the arts, travel, and the natural world. This steaming, effervescent spring is the centerpiece of New Zealand's famous Wai-O-Tapu ...

Japan’s famed hot springs, or onsen, are full of invisible tripwires, from nudity to tattoos. A certified onsen sommelier shares advice on how to best enjoy the experience.

Nearly every American state offers hot springs of one sort or another. They range from bubbling wilderness pools that require a half-day trek to reach, to sprawling modern resorts with spa treatments, ...