Easily the most photographed site in all of Iceland, The Blue Lagoon is perhaps the most supernatural looking body of water on Earth. The water in the lagoon is anything but frosty. The temperature averages about 104F and the soothing, mineral-rich water is rumored to have curative powers.
Hot springs at the Blue Lagoon in Iceland. "The Blue Lagoon geothermal spa is one of the most visited attractions in Iceland. The spa is located in a lava field in Grindavík on the Reykjanes Peninsula, southwestern Iceland."