Take in all the natural beauty of Iceland with a stay at ION. This "luxury adventure hotel" sits about an hour outside of Reykjavik, on the border with Þingvellir National Park and Thingvallavatn, the largest lake in the country. Outside, you can enjoy activities like ice climbing, horseback riding, diving, snorkeling, caving, white-water rafting, and fly-fishing, while inside you can enjoy the stunning, minimalist architecture apparent in all 46 guest rooms, the excellent cuisine from the Silfra restaurant, stunning views at the Northern Lights bar, and the massive hot tub of the on-site spa.