On the occasion of the Journées du patrimoine 2026, staged over the weekend of September 19 and 20, many houses that are normally closed to the public open their doors for extraordinary visits in Paris and Île-de-France. Far from the grand monuments, this event is also a chance to discover a more discreet heritage, made up of distinctive villas, picturesque houses, and residences steeped in history.
Behind their sometimes astonishing façades lie places that tell the story of the evolution of architecture, decorative arts, and the art of living through the centuries. Some mansions bear witness to the rise of movements such as the Art Nouveau or the Art Deco, while others illustrate the craft of great architects or reflect the tastes of their patrons. Many have also welcomed personalities, artists, or families who left their mark on the history of the Île-de-France region.
These tours are all the more valuable as they remain exceptional. Most of these properties are now privately owned or repurposed, which makes them rarely accessible outside of the Heritage Days. The event thus offers a unique chance to discover their interiors, their gardens or their architectural details, often invisible from the street.
Whether you're a history enthusiast, an architecture buff, or simply curious to discover another face of Île-de-France's heritage, these houses hold a wealth of surprises. From villas imagined by renowned architects to quirky homes tucked away in little-known neighborhoods, along with former aristocratic residences and remarkable properties with real character, each place tells its own story. Here’s a curated selection of villas and atypical mansions not to be missed during the 2026 Heritage Days in Paris and Île-de-France. And for the castles, go this way!
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Dates and Opening Time
From September 19, 2026 to September 20, 2026
