The ICEHOTEL is an actual hotel made out of ice! It's located in the village of Jukkasjärvi in the Arctic Circle in Sweden. Guests sleep on blocks of ice; needless to say, staying there is an adventure:
After a day of adventure, nightfall approaches quickly. The outdoor temperature drops and when you step inside ICEHOTEL, you feel a rush of warm air. Inside, the temperature is never colder than -5 °C to -8 °C, regardless of how cold it may be outside. It will soon be time to climb into bed. Dress in warm thermal underwear, put on a hat and slip into the cozy sleeping bag. Share the whole surrealistic ice-night with someone special.