The history of the Paris Catacombs begins in the late 18th century as a solution to a severe public health crisis. In 1780, Paris's main cemetery, Les Innocents, was so dangerously overcrowded that a wall collapsed, spilling remains into an adjacent building. This event prompted authorities to close all city cemeteries and find a new place for the remains of millions of Parisians, choosing the city's extensive underground limestone quarries as the site for a new municipal ossuary.

From Ancient Quarries to a City Crisis

The ground beneath Paris is a labyrinth of tunnels, the result of centuries of limestone quarrying that began as early as the Roman era. This stone built much of the city, including Notre-Dame Cathedral and the Louvre. By the 18th century, many of these quarries were abandoned. In 1774, a series of catastrophic ground collapses, including one that swallowed 300 metres of the Rue Denfert-Rochereau, highlighted the danger these tunnels posed. In response, King Louis XVI created the Inspection Générale des Carrières (Department of General Quarry Inspection) in 1777 to map, consolidate, and secure the network.

At the same time, a crisis was brewing above ground. For centuries, Parisians had been buried in churchyards in the city centre. The largest, the Saints-Innocents cemetery, had been in use since the Middle Ages and was overflowing. The ground level was reportedly two metres higher than the surrounding streets, and the stench and risk of disease were becoming unbearable. The wall collapse in 1780 was the final straw, leading to a ban on all burials within the city walls.

The Creation of the Municipal Ossuary

With the quarries being reinforced and the cemeteries condemned, Police Lieutenant-General Alexandre Lenoir proposed combining the two problems into a single solution: moving the dead into the underground tunnels. The former Tombe-Issoire quarries were chosen, and after renovations, the site was officially consecrated as the “Paris Municipal Ossuary” on April 7, 1786.

The enormous task of transferring the remains began. From 1785 to 1787, nightly processions of black-draped wagons transported millions of bones from the Saints-Innocents cemetery. To avoid public outcry, these transfers were conducted after dark, often accompanied by chanting priests. The bones were initially dropped down a quarry shaft before being moved into the galleries. This process continued for decades, with remains from over 150 cemeteries and churches eventually being relocated to the Catacombs, a name adopted in reference to the recently discovered Roman catacombs.

A Timeline of the Paris Catacombs

  • 14th Century: First underground limestone quarries are mined beneath Paris.
  • 1774: A major quarry collapse on Rue Denfert-Rochereau prompts safety concerns.
  • 1777: King Louis XVI establishes the Inspection Générale des Carrières to consolidate the tunnels.
  • 1780: The Saints-Innocents cemetery is closed following the collapse of a mass grave wall.
  • April 7, 1786: The Tombe-Issoire quarries are consecrated as the Paris Municipal Ossuary.
  • 1787-1814: Remains from numerous Parisian cemeteries are transferred to the ossuary.
  • 1809: The Catacombs are opened to the public by appointment.
  • 1810-1814: Quarry inspector Héricart de Thury redesigns the ossuary, arranging the bones into artistic displays.
  • 1860: The last major bone transfers take place as part of Haussmann's renovation of Paris.
  • 1874: Regular public visitation begins after further renovations.

From Bone Depository to Tourist Attraction

The Catacombs were not initially intended as a public spectacle. However, they quickly began to attract curious visitors. In 1787, the Count of Artois (the future Charles X) visited with members of the court. The site was officially opened to the public by appointment in 1809.

It was the work of Louis-Étienne Héricart de Thury, director of the quarry inspection service from 1810, that turned the chaotic bone repository into the visitable mausoleum we know today. He directed the stacking of skulls and long bones into the now-famous decorative patterns. He also added inscriptions with poems and philosophical quotes about mortality, transforming the space into a place of meditation on life and death. The Catacombs became a success with both Parisians and international visitors, including Emperor Francis I of Austria in 1814 and Napoleon III in 1860.

Frequently asked questions

Who is buried in the Paris Catacombs?

The Catacombs hold the remains of over six million anonymous Parisians. The bones were transferred from numerous city cemeteries that were closed in the late 18th and 19th centuries, so they represent people from many different eras of Paris history, dating back to the Merovingian period.

Were the Catacombs used during any wars?

Yes, the extensive tunnel network has been used throughout history. During World War II, the French Resistance established a headquarters in one section of the tunnels, while the German army created a bunker in another section not far away.

How many people visit the Catacombs today?

The Paris Catacombs are a major tourist attraction, welcoming nearly 550,000 visitors each year. Due to the site's fragility, the number of visitors allowed inside at any one time is limited to 200.

Delve into the dark and fascinating origins of Paris by visiting this unique underground world. To guarantee your entry and avoid disappointment, it is essential to explore guided tours or book your individual tickets well in advance.