The Blue Lagoon geothermal spa is one of Iceland\'s most touted attractions. It was formed after the construction of the Svartsengi power plant, and soon bathers in the lagoon noticed the effects the waters had on their skin. Indeed, the spa, whose waters hover between 98 and 102 degrees, is recommended for those with skin ailments such as psoriasis (for which there is a special clinic.)\n\nGeneral entrance to the Blue Lagoon, which is open to soakers of all ages, varies from 33 to 40 euro and a number of experience packages, spa treatments and meals are available for extra fees. \n\n \n\n \n\n (credit:Flickr:Stuart Chalmers)
日本には3000以上の温泉があるとされるが、大分県の別府温泉は、源泉数、湧出量ともに日本一を誇っており、湧出量では世界第2とされる。日本の温泉について、より詳しくはこちら。\n\nAccording to Smithsonian, people have been harnessing the healing powers of Japan\'s onsen for centuries. \"Legends report samurai warriors soaking off the aftermath of battle and peasants trekking to famous onsen to heal cuts and burns.\"\n\n\"Japan\'s spring water is reputed to have therapeutic value for people with skin ailments, muscle damage, and nervous-system disorders, and some onsen do contain a high percentage of trace minerals, including iron and sodium chloride,\" says Travel + Leisure. \n\nBeppu gets a nod from Lonely Planet for having the best onsen/sand bath combination at Takegawara Onsen where part of the treatment involves being buried in hot sand for 15 minutes. Check out some other onsenhere. (credit:Flickr:melanie_ko)