The Catacombs gather the remainders of approximately six million Parisian, transferred between the end from 18e century and the middle from the 19e century, progressively of the closing of the cemeteries for reason of insalubrity. Along a labyrinth of obscure galleries and narrow corridors, the visitor discovers the bones laid out in a "romantico-macabre" decoration. Pillars, bells of subsidence or bath of feet of the quarrymen evoke the origin of the places, the limestone quarries, while sharpening the curiosity of the visitor. This underground museum restores the history of Parisian and invites to a voyage out of time.