Though all hotels undergo periodic renovations, very few do it as frequently as Sweden's ICEHOTEL, which is rebuilt every year. That's because as the name indicates, the hotel is carved entirely from ice blocks that melt into a giant puddle of water, when the temperatures warm up. And while each rendition of ICEHOTEL is special, the 2014 version is even more so, given that the unique destination is celebrating its 25th anniversary.