The Journées du Patrimoine is the not-to-be-missed event of the month of September. This year, it takes place from September 20 to 21, 2025, and is the perfect opportunity to explore the Paris region and discover its must-see treasures and secret nuggets. This 42nd edition promises to be rich in new visits, free good deals and family events, and it will once again be difficult not to find an idea for an outing to match your passion.
The castles of the Ile-de-France region are also in the spotlight during the Journées du Patrimoine. In all four corners of theÎle-de-France region, these sumptuous residences invite us to explore their past, inviting us to experience a historical and cultural epic. In Val d'Oise, you'll find treasures that are well worth the detour. To help you find your way around, we've listedthe castles in the 95 département that are waiting for you for the Journées du Patrimoine 2025, along with their respective programs. And don't forget to consult this guide regularly, as the selection grows with each new announcement and discovery.



Heritage Days 2025: discover the secrets of the Villarceaux estate (95)
Will you be visiting the Parc naturel régional du Vexin français on September 20 and 21, 2025? Take advantage of the Journées du Patrimoine to visit the Domaine de Villarceaux in Chaussy. [Read more]



Heritage Days 2025: guided tours of the astonishing Château de la Roche Guyon (95)
Take advantage of the Journées du Patrimoine (Heritage Days) on Saturday September 20 and Sunday September 21, 2025, to visit a unique château in the Île-de-France region: Château de la Roche Guyon, located in the Val d'Oise. [Read more]



Heritage Days 2025: visit the Château d'Ecouen - Musée national de la Renaissance (95)
The Château d'Ecouen and its Renaissance museum are taking part in the Journées du Patrimoine (Heritage Days) on Saturday September 20 and Sunday September 21, 2025. Enjoy free guided tours for all ages. [Read more]
Heritage Days 2025, the program at Château de Beaumont-sur-Oise (95)
The Château de Beaumont-sur-Oise is unveiled during the Journées du Patrimoine 2025. A vestige of the Middle Ages, the château's keep dominates the banks of the River Oise and offers a splendid view of the Saint-Laurent church, to be discovered on September 20 and 21. Discover the program! [Read more]



Heritage Days 2025 at Château d'Auvers-sur-Oise (95): free visit to the Van Gogh exhibition
The Château d'Auvers-sur-Oise awaits you on the weekend of September 20 and 21, 2025, for the 42nd European Heritage Days. Discover the program that awaits you this year. [Read more]
Dates and Opening Time
From September 20, 2025 to September 21, 2025
Prices
Free