10. Hang Nga Guesthouse a.k.a Crazy House (Vietnam) :" The house is owned by the daughter of the ex-president of Vietnam, who studied architecture in Moscow. "It does not comply with any convention about house building, has unexpected twists and turns, roofs and rooms. It looks like a fairy tale castle, it has enormous “animals” like a giraffe and a spider, no window is rectangular or round, and