In the Hauts-de-Seine, an underground network of caves stretching beneath the town of Sèvres hides numerous secrets, including a mysterious chamber known as the cathedral, about which very little is still known.
In the Hauts-de-Seine department, the town of Sèvres is taking part in the 42nd Journées du Patrimoine! Discover the program of visits and events scheduled for the weekend of September 20 and 21, 2025.
