The X House is not the name of a popular rave venue, it's an awesome X-shaped home hanging off a cliff outside Barcelona, Spain.
Designed by Spanish architecture firm Cadaval & Solà-Morales, the awe-inspiring pad is basically two intersecting rectangular structures with four triangular recesses. One on the side avoids a tree, the other gives a view of neighbouring houses, the back one is home to the garage, and the front -- the pièce de résistance -- is made entirely of windows for an incredible view of the hills below. Whether they're classic Gaudí creations or modern structures like this one, the buildings in Barcelona are consistently incredible. The X House is no exception. The owners better have awesome parties.