In 2005, the Blue Lagoon clinic and hotel opened. The modern, well-designed facility is a five-minute walk from the main spa, and a winding path takes you past a field of lava rocks. The main reason to stay, aside from the proximity? A separate lagoon reserved for guest access only.
Icelandic fun fact #10: Each October, Reykjavik hosts the Iceland Airwaves music festival, drawing bands and music fans from all over the world. Past acts include TV on the Radio, Wolf Parade, Robyn, Bloc Party, and Sigur Rós. Every year, the Blue Lagoon hosts an in-water party complete with international DJs, too.