IntroductionBeneath the streets of Paris lies a hidden city of bones, the Catacombs. When they returned days later, everything had vanished. Visit Info:To explore the Paris Catacombs legally, you’ll need a ticket and an advance reservation. Only a small portion of the underground tunnels is open to the public. Metal Insider is teaming up with the newly resurrected site Dizarranged, which is also running a haunted countdown to Halloween, featuring 31 haunted places from around the globe.