Ceremony Hall at Sweden s Icehotel © Wolfgang Kaehler/LightRocket via Getty Images
Rebuilt every winter since 1989 in the northernmost county of Sweden, the Icehotel in Jukkasjärvi is not only one of a kind each year, but the first of its kind established. Other ice hotels can now be found in Norway, Finland, Canada, Romania, and elsewhere, but this one is still the largest: The ice blocks harvested from the nearby Torne River to build the Icehotel weigh 2 tons each.