Here we go again! The Journées du patrimoine are coming to Paris and the Île-de-France region on the weekend of September 20 and 21, 2025, for a new 42nd edition. It's the perfect opportunity for enthusiasts and the curious alike to get the most out of the event, with its jam-packed program of free visits,unusual events andexceptional openings at the heart of the treasures that make up the Ile-de-France's heritage.
Every year, venues of all kinds enter the dance, and it's hard not to find a program to match your passion. From must-see monuments to little-known nuggets and major institutions, we take the opportunity to explore our heritage from every angle.
And there's no shortage of châteaux to choose from. What's more, the Heritage Days are also a great opportunity to visit the treasures of the Île-de-France region. And at Essonne, you can discover the history and treasures of some of the region's most magnificent buildings through a program specially designed for the occasion. We'll take you on a tour of the castles in the 91 département that are waiting to welcome you for the Heritage Days. By the way, as this page is updated according to announcements and discoveries, please consult it regularly to discover even more ideas for outings.



Heritage Days 2025 at Château de Villiers - Draveil (91): weekend events
The town of Draveil and its Château de Villiers invite you to join them for the 42nd Journées du Patrimoine, on Saturday 20th and Sunday 21st September 2025, with a programme of visits for young and old! [Read more]



Heritage Days 2025 at Château de Dourdan (91): discover a sublime medieval site
For the 42nd edition of the Journées du Patrimoine, the Château de Dourdan, a fabulous Essonne treasure, unveils its program for the weekend of September 20 and 21, 2025. An opportunity to discover this sublime historic site dating back to the Middle Ages. [Read more]



Heritage Days 2025: guided tours of the Château de Saint-Jean de Beauregard (91)
For the 42nd edition of the Journées du Patrimoine, the Château Saint-Jean de Beauregard awaits you on Saturday September 20 and Sunday September 21, 2025. The program for these days of discovery includes guided tours of the château and gardens. [Read more]



Heritage Days 2025 at the Domaine de Chamarande (91): a historic and artistic site to see
Fancy a family outing during the 42nd Journées du Patrimoine? Then head for the Domaine de Chamarande, in the Essonne region: the château and its grounds reveal their program for the weekend of September 20 and 21, 2025. [Read more]



Heritage Days 2025: visit the Château and Park of Courances (91)
Take advantage of the Journées du Patrimoine 2025 to discover a haven of peace: the Château and Parc de Courances, in the 91 region of France, open their doors to us on the weekend of September 20 and 21, 2025. [Read more]



Heritage Days 2025 at Château de Mesnil-Voysin (91), the program for this year's event
The Château de Mesnil-Voysin, located in Bouray-sur-Juine, awaits us this weekend of September 20 and 21, 2025, on the occasion of the Journées du Patrimoine (Heritage Days). [Read more]



Heritage Days 2025: tours of the medieval château de Villeconin (91)
The Château de Villeconin, located in the Essonne region of France, invites us to take advantage of the new edition of the Journées du Patrimoine (Heritage Days) by showcasing its treasures during a program of visits this weekend of September 20 and 21, 2025. [Read more]



Heritage Days 2025: discover the château and park at Courson (91)
The Domaine de Courson in Essonne invites you to join us for the 42nd Heritage Days. On the weekend of September 20 and 21, 2025, discover the château and its remarkable garden through a special program of visits. [Read more]
Dates and Opening Time
From September 20, 2025 to September 21, 2025
Prices
Free