How about going underground to celebrate the 42nd Journées du Patrimoine? Every year, this cultural event allows many curious people to push open the doors of fascinating cultural sites, major institutions, castles and places usually closed to the public. The Journées du Patrimoine are also an opportunity to enter museums and enjoy unusual tours.
This is exactly what awaits you on Saturday 20th and Sunday 21st September 2025 at the Paris Sewer Museum.
Journées du Patrimoine 2025: the program at museums in Paris and the Île-de-France region
During this 2025 edition of the Journées du Patrimoine, a large number of museums and art foundations are opening their doors free of charge in Paris and the Île-de-France region. Join us on Saturday, September 20 and Sunday, September 21, 2025, for a program full of wonderful discoveries. [Read more]
The Musée des égouts de Paris is taking part in the latest edition of the Journées du Patrimoine! Join us on Saturday September 20 and Sunday September 21, 2025 for unusual tours under the sidewalks of Paris. [Read more]
An opportunity to learn more about this immersive museum located underground. It's here that we discover the essential work of cleaning and maintaining the sewers. The museum also explains the challenges of water regulation and treatment to protect the environment and the river, while walking above working sewers.
It's an opportunity to gain a better understanding of the major challenges facing Parisian sanitation from yesterday to tomorrow, through an unusual visit featuring a museographic tour, models, interactive educational activities and multimedia.
Immerse yourself in the capital's underground history at the Musée des Égouts de Paris, a unique venue that takes you behind the scenes of one of the world's oldest and most complex sewer systems. Set in the heart of the active galleries of the Paris sewer system, the museum offers a sensory and educational immersion in historic infrastructures still in operation.
The 45-60 minute tour invites visitors to explore 500 meters of galleries beneath the Quai d'Orsay, near the Pont de l'Alma. These spaces, where the city's wastewater flows daily, bear witness to the technical and social evolution of Paris since the XIXᵉ century.
The museum provides adaptations for people with reduced mobility, with an elevator providing access to the galleries. The constant temperature of 13°C and the characteristic odors of the sewers recall the authenticity of the site.
So, are you ready to plunge into the history of Paris's sewers?
Dates and Opening Time
From September 20, 2025 to September 21, 2025
Location
Paris Sewer Museum
Pont de l'Alma
75007 Paris 7
Prices
Free
Official website
journeesdupatrimoine.culture.gouv.fr
More information
Free admission, subject to facility capacity
Journées du Patrimoine 2025: the program at museums in Paris and the Île-de-France region
Journées du Patrimoine 2025 in Paris: free and unusual tours of the sewer museum
