Tourism in Iceland has skyrocketed in recent years, solidifying the country's status as one of the world's trendiest destinations. And most tourists don't feel like they've truly visited Iceland until they've gone for a dip in the Blue Lagoon, a popular attraction that sees about 700,000 visitors every year.

This geothermal pool may be packed with out-of-towners (you'll need to book in advance), but you'll be so distracted by the 100-degree-Fahrenheit, mineral-filled water (which is said to work wonders on your skin), that you won't even notice.