The Blue Lagoon
Iceland's most popular visitor attraction, the Blue Lagoon is a giant bathtub that pools six million litres of geothermal seawater from 2000 metres beneath the earth's surface. By the time it reaches the lagoon, the mineral-rich milky, aqua blue waters simmer at temperatures between 37 and 39°C. In addition to the lagoon, there's a sauna, steam bath carved out of a lava cave and a massaging waterfall. A shop, café and viewing deck keeps spectators amused.