Have you ever noticed something off about a building in your neighborhood? No one ever goes in or out, perhaps the windows are painted over–or there aren’t any windows at all? Sure, there could be something creepy going on in there, but it’s also likely that the building isn’t really a building at all. Well, at least not in the way most of us think of buildings! From fancy town homes and storefronts that aren’t, to an entire fake city, click through to check out some of the world’s most fascinating false building facades.