Old quarries transformed into municipal ossuary.
Situated 20 metres below ground.
Contains the remains of 6 million Parisians.
Famous names among them: Rabelais, La Fontaine, Racine, Montesquieu, Lavoisier, Danton and Robespierre.
2 kilometres of tunnels.
14°C on average.

You can visit this site all year long, if you aren’t afraid of skeletons.

Catacombes de Paris
1, avenue du Colonel Henri Rol-Tanguy (place Denfert-Rochereau).