Blue Lagoon, Iceland

No list of must-see hot springs can be complete without mentioning the Blue Lagoon, Iceland's sparkling water gem. The lagoon, just 20 minutes from Keflavik Airport, is the perfect stop to begin or end your exploration of the island. Its mineral-rich geothermal seawater flows along moss-covered rocks, overlooking distant mountains.
Recommended airport: Reykjavik - Keflavík
Pamukkale, Turkey

More than a dozen hot springs decorate the hills of Pamukkale Natural Park, a UNESCO World Heritage Site in southwestern Turkey. The area's hot water, made even bluer by the white limestone terraces that contain it, has been attracting bathers for centuries!
Recommended airports: Istanbul, Cardak
Kusatsu Onsen, Japan

Kusatsu Onsen is one of the most famous hot springs in Japan and the world. Located at an altitude of 1,200 meters, the high-quality thermal water found there is believed to cure every ailment (except lovesickness). Known as a spa for many centuries, Kusatsu's fame was finally spread by a German doctor of the imperial court in the late 1800s, who extolled its beneficial properties.
Recommended airports: Matsumoto, Osaka, Tokyo
Chena Springs, Alaska

Just outside Fairbanks, Chena is the most accessible and developed inland hot springs in the state. It is the perfect place to take in the beauty of Alaska, enjoying the steaming water and ice-laden winter scenery as well as the Northern Lights, which appear between late September and April.
Recommended airport: Fairbanks