Photo : @Olivier.Placet
Science Festival at the Sewer Museum!
Step beneath the streets and uncover the mysterious underground arteries that keep Paris running smoothly. This hidden maze along the riverbank offers a rare glimpse into the engineering history of the city, perfect for those who want to see what lies behind the iconic facade.
Musée des égouts de Paris (Paris 7th)
About
On Sunday, October 11, 2026, the Musée des égouts de Paris participates in the Fête de la science. From 10:00 to 17:00, visitors are invited to explore the underground world of the capital free of charge. Located at the Pont de l'Alma in the 7th arrondissement, this unique site offers a fascinating look into the history and mechanics of the city's sanitation system. To ensure everyone can enjoy the experience, the entire facility is fully wheelchair accessible, providing a seamless way for all guests to discover the inner workings of the Parisian sewage network.
What to visit in the museum?
Beyond this special program, visitors can freely explore the museum: approximately 500 meters of galleries located under the Quai d'Orsay, permanent exhibition spaces on the history of Parisian sanitation, and educational displays on how the network functions. The tour generally lasts between 45 and 60 minutes.
Our take on this event
Take advantage of the Fête de la science to visit the Musée des égouts de Paris on Sunday, October 11, 2026. The museum is open from 10:00 to 17:00, and admission is free for all visitors. Situated beneath the Quai d'Orsay, the museum provides a rare opportunity to explore the technical heritage of the city. The premises are fully wheelchair accessible.
During your visit, you can explore approximately 500 meters of underground galleries. The exhibits feature permanent displays detailing the history of Paris's sanitation system, along with educational tools that demonstrate how the network operates. Most visitors spend between 45 and 60 minutes walking through the galleries, allowing enough time to engage with the educational content provided throughout the tour.
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