Hokkaido is known for its abundance of natural hot springs, or onsen, as the Japanese call them, and they are a great way to de-stress. Soaking in an onsen is similar to soaking in a warm bath, except better. The bathing pools are usually located out in the open air and are very relaxing. Their pleasantly steaming waters provide a dramatic contrast to the snowy surroundings. Natural hot springs are formed as by-products of volcanic activity deep under the ground and the Japanese believe that they have powerful healing qualities. This is true, to an extent, depending on the mixture of minerals found in the waters, which differ from spring to spring. Hot springs are also a great way to beat the cold. So the next time you're feeling chilly, head to an onsen in Otaru or one of its neighbouring towns such as Sapporo. If you do, though, make sure you're alright with taking off all your clothes as bathing suits are usually strictly prohibited.