The Dalen Hotel
Credit: Nick Laing / Getty Images

Originally a "summer palace" built for vacationing royals, the Dalen Hotel is one of the largest wooden buildings in Europe and also one of the strangest. Styled with Norse motifs, the building, which overlooks the grand Balek Lake, looks vaguely asiatic and completely fantastical. Though it once served as a retreat for Nazi officers, it is now popular with well-to-do Scandinavians.