What to Expect Inside the Paris Catacombs
What the hour underground actually feels like, in the order it happens. If you are weighing whether to book at all, this is the page to read; the Paris Catacombs Tours list is there when you have decided.
The first 131 steps
- The door. A small building on a traffic island. It looks like nothing, and the queue is outside it.
- The spiral. A tight stone staircase, one person wide, turning left the whole way down. It takes about two minutes.
- The bottom. 20 metres below the street, and immediately colder. Most people put a layer on here.
- The corridor. A long, low, plain gallery. This is the part nobody photographs, and it is where the temperature settles into you.
The twenty minutes before you see a bone
People are often surprised by this stretch. It is quarry, not ossuary: bare limestone, floor lighting, the occasional carved street name overhead marking which road you are walking under. There is a scale model of a fortress cut by a quarryman in the 1780s along the way.
Take it as the approach rather than the delay. The change when the ossuary opens is much stronger for having walked a quarter of a mile of ordinary rock first.
« Arrête ! C’est ici l’empire de la mort »
Two banded pillars, a stone lintel, and the line cut into it. Everyone stops. Everyone photographs it. Then the corridor beyond opens out and both walls are bone from floor to ceiling.
The bone walls: what you are looking at
The first reaction is usually scale rather than horror. It is quiet, it is tidy, and it goes on for far longer than you expect — wall after wall of femurs laid end-on with skulls set into them in lines and crosses.
The second reaction, for most people, comes at a plaque: a date, a parish, a cemetery name. It stops being an installation and starts being a record of the people who lived in the streets you walked to get here.
Cold, damp and dark — what 14 °C feels like after forty minutes
It is 14 °C down there in February and 14 °C in August, and the air is humid enough that the walls sweat. For the first ten minutes in summer it is a relief. By the fortieth it is cold, particularly on bare arms.
Take a layer, wear closed shoes with grip — the floor is damp gravel and stone — and you will notice none of it.
What reopened in April 2026, and what changed
The site was closed from November 2025 and reopened on 8 April 2026. The lighting was completely redesigned, air-handling units replaced and continuous humidity and CO&sub2; monitoring installed to slow the decay of the bones. The Wall of the September Martyrs was rebuilt in dry stone.
The visit route changed with it, and the audio guide was rewritten and is now narrated in the voice of Héricart de Thury, the inspector who arranged the ossuary. Anyone who came before 2026 has not seen this version.
The 112 steps back up, and the walk from the exit
The climb out is a second spiral, shorter than the descent but felt more. There is a bag check at the top — taking a bone is a criminal offence and people try — and then a door onto 21 bis avenue René-Coty, nearly 700 metres from where you started.
Alésia and Mouton-Duvernet are the nearest stations from there. Plan the onward leg from the exit, not the entrance.
What it is, and what it is not
| It is | It is not |
|---|---|
| Quiet, cool and oddly calm | A haunted attraction or a scare experience |
| A one-way walk of 1.5 km | A loop back to where you started |
| Lit throughout, floor and wall | Dark enough to need a torch |
| Wider than the photographs suggest | Step-free, or possible with a pushchair |
| A cemetery, treated as one | A place to touch anything |
Photographs, phones and what is refused
- Photography is allowed; tripods are not.
- There is no phone signal underground — download your ticket first.
- Bags over 40 × 30 × 20 cm are refused at the door, and there is no cloakroom.
- No eating, drinking or smoking, and touching the bones is forbidden.
Now pick the version of this you want
The same route with an audio guide, or ninety minutes to two hours with a guide and, on five departures, the locked chambers opened.
The route and map page shows where the two doors are, and the questions page covers the rest. Prices and hours live on the visiting guide.