Speaking only of places I've been to a few spring to mind, mainly places in Rome (ossuaries and catacombs) but they're more grim than creepy.
No the creepiest place I've ever been to was in Cornwall believe it or not. There was a tourist atttraction which was the house of a Victorian gentleman who collected collections and then filled his house with oddities. It was just a weird place.
No the creepiest place I've ever been to was in Cornwall believe it or not. There was a tourist atttraction which was the house of a Victorian gentleman who collected collections and then filled his house with oddities. It was just a weird place.