The Uunartoq Hot Springs in Greenland

You might not think of Greenland, most of which is covered by an ice cap, as an ideal place to warm up. But you might want to try the warm waters of Uunartoq, an island off the southwestern coast. There are three hot spring-fed pools on the island which reach temperatures of 100-140°F. Norse explorers discovered them at least a thousand years ago and put them to good use in that frozen territory. The US Geological Survey says that the springs are not of volcanic origin, but are most likely due to crust friction.