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For nearly three decades, the famed Icehotel in Jukkasjärvi, Sweden, has been rebuilt every winter after melting in warm weather. But thanks to a new solar-powered refrigeration system, nine deluxe suites (complete with private saunas and baths), 11 art suites, an ice bar, and an ice art gallery will remain open year-round. Thanks to nearly 24 hours of sunlight a day during the summer, the frigid structure can be kept around 23 degrees Fahrenheit even in the warmer months. While the interiors are made from ice blocks, the exterior is constructed from concrete to help maintain the cooler atmosphere, much like a thermos. "We estimate that by using solar panels and harnessing the near-constant daylight of the summer months, Icehotel will reduce its overall energy requirements," said hotel founder Yngve Bergqvist in a statement. "We will produce around 75 kW between April and September, leaving an energy surplus that we can utilize to run existing buildings such as a restaurant, offices, and warm guest rooms." This year-round property sits adjacent to the site of the winter-only hotel, whose 2016 edition will open on December 16. From $630/night; icehotel.com
