1. Paris: Catacombs Skip-the-Ticket-Line Ticket and Audio Guide
Avoid the hassle of ticket counters. Simply show your voucher, start your self-guided tour and explore the 'City of Lights' at your own pace with an informative audio guide. As you discover a world beneath the streets of Paris, see tunnels and rooms decorated with the human bones and skulls of around 6 million Parisians. The Paris Catacombs were originally a quarry with hundreds of kilometers of tunnels burrowed beneath the streets of Paris. When the cemeteries of Paris became overfilled, the city started moving the dead into the Catacombs.