2. The Icehotel, Sweden

Rebuilt annually in Jukkasjärvi, the Icehotel features over 50 rooms sculpted entirely from ice and snow. Each winter, international artists redesign the suites, making every stay unique. Guests sleep on ice beds covered with reindeer skins, and the temperature is kept around -5°C (23°F).
It’s a true blend of art, nature, and adventure, with a sauna to warm up after your icy night.