Known to many travelers as Crazy House, Hang Nga’s Guesthouse is a very unusual piece of architecture that also serves as accommodation in Da Lat. The structure was designed by a local architect named Dang Viet Nga, but he was clearly influenced by the Spanish architect Gaudi. The guesthouse looks like a tree and is complete with details like a cavernous stairway, branches that twist out of windows and sculpted animals that double as furniture and even fireplaces.