The Catacombs of Paris contain the bones of more than 6 million Parisians, transferred from different cemeteries of the capital for safety issues between the late eighteenth century and the mid-nineteenth century. This underground labyrinth is housed in the old quarry galleries (whose stones were used for the construction of the city). To get into the catacombs, visitors must go down the 213 steps reaching 20 meters underground to travel the almost two kilometers of tunnels open to the public (less than 1% of all the catacombs). The temperature is constant: 14 °, all year round.

Underground Paris is open to visitors and offers a very surprising spectacle: more than 6 million human bones strewn along the length of the tunnels, profane poems and texts scattered along the way, which will make the most curious hold their breath. A unique place in the world that offers the most courageous journey beyond time.

The Catacombs of Paris are open from Tuesday to Sunday from 10 am to 8:30 pm and most holidays (except January 1st, May 1st, and Christmas).