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Ice Hotel. Ice thrones made for the Swedish King and Queen for the year 2000 New Year celebrations at the Ice Hotel, a hotel made entirely from snow and ice. The hotel is the world's largest igloo, and lies within the Arctic Circle in Jukkasjarvi, Sweden. It is made every winter by spraying 30,000 tonnes of snow onto moulds which are removed once the snow has compacted. 10,000 tonnes of ice are also used. The hotel sleeps over 100 guests on ice beds. Visitors keep warm in their sleeping bags despite temperatures that reach -9 degrees Celsius. Guests can visit the ice exhibition hall, sauna, cinema or chapel, as well as drink from ice glasses in the ice bar. The hotel melts every May. (KEYSTONE/SCIENCE PHOTO LIBRARY/DAN TOBIN SMITH/SCIENCE PHOTO LIBRARY)