Temples filled with treasure, haunted asylums, and unopened tombs? It sounds more like “Tomb Raider” or a Spielberg flick. Contrary to popular belief, these places are very much real and grossly forbidden. That doesn’t stop people from trying to take a sneak peek to some of the world’s most off-limit locations, however. Here are the 15 historical places that spark the imagination and release untapped curiosity.