On place Denfert-Rochereau stand two twin pavilions by Claude-Nicolas Ledoux, what is left of the barrière d’Enfer. In front of one of them there is always a queue for the Catacombs. In the other, where there is no queue, is a free museum about the Liberation of Paris, and twenty metres under the square is the thing that makes it worth arriving at opening time: the command post from which the Resistance ran the insurrection.

The bunker is free to visit, but you can only book in person, at the museum entrance, on the day itself, and there are very few places: anyone turning up in the afternoon almost always finds it full. You go down nearly a hundred very steep steps, and the museum openly advises against the visit for anyone with heart or breathing problems and for anyone who suffers from claustrophobia.
Why did the Resistance choose to hide right under an open square?
Let’s begin!
1. Ledoux’s two pavilions, which are the building
The museum occupies one of the two toll houses of the barrière d’Enfer, designed by Claude-Nicolas Ledoux in 1787 for the wall of the Farmers-General: anyone entering Paris this way paid the duty on their goods.

Look at the two buildings before you go in, because their history explains the rest: they are massive, low, rusticated at the base, and they were built to control. Underneath run the galleries of the quarries the stone Paris is built from came out of, and those are the ones that made the command post possible in 1944.
2. The 1940 room, where it all starts
The route does not begin with the Liberation, it begins with the defeat. 1940 is the year France collapses in six weeks, the government signs the armistice, and two very different men, each on his own account, decide not to accept it.
Keep the date in front of you as you look at the cases, because the museum is built on a parallel: Jean Moulin, the prefect who becomes the coordinator of the internal Resistance, and Philippe Leclerc de Hauteclocque, the officer who works his way up from Africa to Paris with his division. The two stories run on two tracks and meet only at the end.
3. The envelope with Pétain’s head on it
What can you see of a man living underground?
You can see this, and it is the object that will stay with you longer than any panel: the envelope of a letter Jean Moulin sent to his mother and his sister, addressed to 21 Grand Rue in Montpellier and postmarked Avignon, 3 November 1942.

Find the stamp in the top right corner: 1.50 francs, with Pétain’s profile. The man who is unifying the Resistance franks the letter to his mother with the face of the French head of State, because that was the stamp the post office sold. There is no paragraph about the Occupation that says as much in as little space.
4. The command post, twenty metres under the square
From the museum you go down into the abri, the shelter in which colonel Henri Rol-Tanguy, military head of the French Forces of the Interior for the Paris region, set up his command post on 20 August 1944, under the west pavilion.
Before you join the queue, know what you are in for. The self-guided visit lasts thirty minutes, the mixed-reality one forty-five. You go down twenty metres by nearly a hundred steep steps, and at the bottom there are low rooms, pipes, the telephone switchboard. It is not accessible to disabled visitors, and anyone who cannot go down can ask at reception for the 360-degree virtual visit on a tablet, which the museum lends out.
5. The two collections that made the museum
This museum exists because two people decided it should. The holdings come from two donations: the bequest of Antoinette Sasse, a painter and resistant and a friend of Jean Moulin, and that of the Fondation Maréchal Leclerc de Hauteclocque. Together they come to nearly three hundred objects.
What difference does it make, where an object comes from?
Stop and read the provenances on the labels, which almost nobody reads. Many of these pieces are not official relics: they are letters, forged papers, photographs, personal objects kept at home by somebody for fifty years and then handed over. That is the difference between a military history museum and a museum made of lives.
6. The museum is new here, and the date matters
The last thing to know is about the place rather than the objects: the museum opened here on 25 August 2019, the seventy-fifth anniversary of the Liberation of Paris, and the Ledoux pavilions were restored to take it.
That is why, when you search for this museum, you find old addresses online: until then the museum was somewhere else. And it explains why the display is clear and recent while the building is two and a half centuries old.
Practical information
Data checked on 24 September 2026 on the official website museeliberation-leclerc-moulin.paris.fr. Prices and opening hours change: check again before you leave.
Tickets. Access to the permanent collections is free for everyone and needs no booking. Temporary exhibitions are paid for, and the price changes from one to the next. The command post. The visit is free and lasts thirty minutes, but you can only book in person, at the museum entrance, on the day itself, and the places are very few: if it matters to you, come at opening time. Opening hours. The museum opens Tuesday to Sunday from 10:00 to 18:00. Last admission is at 17:30 and the rooms start closing at 17:45. Closures. It closes on Mondays, and on 1 January, 1 May and 25 December. Accessibility. The museum is accessible, the command post is not: the only way down is a steep flight of nearly a hundred steps. Getting there. The entrance is at 4 avenue du Colonel-Henri-Rol-Tanguy. The stop is Denfert-Rochereau on lines 4 and 6 and on the RER B, right on the square. How long to allow. The six stops take an hour and a half, and the command post adds another half.
The exhibitions on at the museum, with their dates, are in the table of exhibitions in Paris.
From here on
The entrance to the Catacombs is across the square, and the stone that came out of them built the mansions of the Marais. Ten minutes away on foot, towards Montparnasse, are two free house-studios, the Musée Bourdelle and the Musée Zadkine. If you want the Paris of the Occupation told from another side, the mahJ in the Marais gives a section to the Dreyfus affair and an installation to the people who lived in its own building in 1939.
Photo credits: FFI staff at the Hôtel de Ville and Jean Moulin’s envelope, the museum’s own collections (CC0); Ledoux pavilions by Coyau (CC BY-SA 3.0), from Wikimedia Commons.