Every year, the Journées du Patrimoine (Heritage Days ) invite us to explore the history and cultural wealth of France. In Seine-et-Marne (77), the event takes on a special dimension. From September 20 to 21, 2025, you can discover the region's jewels: medieval castles, unusual museums, historic homes... This weekend offers a unique opportunity to push open the doors of places that are often inaccessible, and experience a complete immersion in the local heritage. This year's event explores the theme of " architectural heritage ".
The must-see outings in Seine-et-Marne revolve around emblematic sites, but also little-known nuggets. Whether you're a lover of architecture, history or nature, there's something for everyone. The department, rich in its royal past, reveals majestic châteaux, as well as unspoilt villages where time seems to have stood still.
It's sure to be a busy weekend: with its five departmental museums , dozens of châteaux and 130,000 hectares of woodland, the Seine-et-Marne department has some wonderful walks to offer during the European Heritage Days.
More than 50 European countries taking part, tens of thousands of places to visit... The Journées du Patrimoine (Heritage Days ) are a great popular and cultural celebration, allowing us to enjoy the most beautiful historical and heritage sites close to home.
For two short days only, we have the opportunity to visit the places that house the masterpieces and history of our country and our region: to be able to discover as many treasures as possible, we need to be well organized and make the best choices!
Throughout the weekend, guided tours, workshops and special openings of monuments will take us back to medieval and even prehistoric life in the region! Discover our selection.



Heritage Days 2025: the program at the Musée de la Gendarmerie Nationale in Melun (77)
The Musée de la Gendarmerie Nationale is taking part in the 42nd European Heritage Days, offering a fun and artistic program for families on September 20 and 21, 2025. [Read more]



Journées du Patrimoine 2025: visit the Musée de la Grande Guerre in Meaux (77) with your family
For the Journées du Patrimoine (Heritage Days), the Musée de la Grande Guerre is opening its doors on Saturday September 20 and Sunday September 21, 2025, to let us discover its reserves. [Read more]



Heritage Days 2025: discover the dungeons of Nemours castle (77)
For the Journées du Patrimoine (Heritage Days), the château-musée de Nemours invites the curious to discover its tours and events on September 20 and 21, 2025. On the program: original tours of the Château de Nemours basements and other events. [Read more]



Heritage Days 2025 at Château de Ferrières (77): tours and giant cluedo at the château
The Journées du Patrimoine 2025 take over the Château de Ferrières, in Ferrières-en-brie. Here's the program that awaits you in this sublime Seine-et-Marne spot this Sunday, September 21, 2025. [Read more]



Heritage Days 2025: discover the Safran Museum, an aerospace museum in Réau (77)
The Safran Aerospace Museum is also taking part in the Heritage Days on the weekend of September 20 and 21, 2025. Located in Réau, Seine-et-Marne, the museum is offering a whole weekend of activities for children. [Read more]



Heritage Days 2025: historical re-enactment at the Musée de la vie d'autrefois (77)
On Saturday, September 21 and Sunday, September 22, 2025, the Journées du Patrimoine (Heritage Days) are back: an opportunity to discover little-known museums, such as the Musée de la vie d'autrefois, in Seine-et-Marne. [Read more]



Heritage Days 2025: events at the Musée de la Préhistoire d'Île-de-France (77)
The Musée de la Préhistoire d'Île-de-France in Nemours is opening its doors to archaeology enthusiasts during the Journées du Patrimoine, on September 20 and 21, 2025, with a special program. [Read more]



Heritage Days 2025, events at the Musée des Transports Urbains in Chelles (77)
The Musée des Transports Urbains, located in Chelles, is opening its doors to us free of charge, on the occasion of the Journées du Patrimoine, on September 20 and 21, 2025. Come and discover over 70 transport vehicles dating from 1863 to the present day through a special program. [Read more]



Heritage Days 2025 in Seine-et-Marne: the program at Domaine de la Grange-la-Prévoté (77)
Looking for a program for the Journées du Patrimoine 2025 in Seine-et-Marne? In Savigny-le-Temple, the Domaine de la Grange-la-Prévôté unveils its program for this 42nd edition. [Read more]



Heritage Days 2025: discover the Japanese Gardens of Favières in Seine-et-Marne
The Japanese Gardens site at Favières in Seine-et-Marne is exceptionally opening its doors free of charge on September 20 and 21, 2025, to mark the 42nd Journées du Patrimoine. [Read more]



Heritage Days 2025 at Château Arribas (77), program of free events
Ready for two days of adventure? On September 20 and 21, the Journées Européennes du Patrimoine 2025 (European Heritage Days 2025) will be opening the doors of historic and unusual sites in the Paris region, free of charge. Among them, the Château Arribas, known as the home of Disneyland Paris' official glassblowers, has a whole host of activities in store for you. [Read more]



Heritage Days 2025: meet craftsmen at Château de Jossigny (77)
As part of the 42nd Journées du Patrimoine, the Château de Jossigny is opening its doors to art lovers on September 20 and 21, 2025. [Read more]



Journées du Patrimoine 2025: glass-spinning demonstration at Atelier la Perle d'Art - Carnetin (77)
The Journées du Patrimoine 2025 invite you to explore the La Perle d'Art workshop in Carnetin, Seine-et-Marne. Plunge into the heart of artisan creation and discover the secrets of glass spinning in this unique venue, open exceptionally on September 20 and 21. An unmissable event for lovers of craftsmanship and tradition. [Read more]



Heritage Days 2025 at the Musée vivant du Chemin de fer (Ajecta) in 77, the program
On September 20 and 21, 2025, take advantage of preferential rates during the European Heritage Days to visit the Living Railway Museum in Longueville (77), where steam locomotives and historic wagons bring over 150 years of railway history to life. [Read more]



Heritage Days 2025: discover the program at Château de Rosa Bonheur (77)
The Château de Rosa Bonheur in Thomery is taking part in the latest edition of the Journées du Patrimoine. An opportunity to immerse yourself in the world of the famous animal painter. Discover the program for September 20 and 21, 2025. [Read more]



Heritage Days 2025 at the Château royal de Montceaux (77): discover the Château des Trois Reines
How about exploring the remains of the Château Royal de Montceaux? This historic site in Seine-et-Marne is opening its doors to us for the Journées du Patrimoine (Heritage Days) on the weekend of September 20 and 21, 2025. [Read more]



Heritage Days 2025: visit the Provins (77) archaeological excavation site
During the Heritage Days on September 20 and 21, 2025, discover the Provins archaeological excavation site in the Seine-et-Marne département. [Read more]



Heritage Days 2025: discover the conical air-raid shelter at Villenoy (77)
Would you like to discover a nationally unique monument in the Seine-et-Marne region? The famous Villenoy conical air-raid shelter is opening its doors to you this September 20, as part of the 2025 Heritage Days! [Read more]



Heritage Days 2025 at Château de Brie-Comte-Robert (77), the weekend program
The Château de Brie-Comte-Robert opens its doors to you for this 42nd edition of the Journées du Patrimoine. Are you ready to plunge into the heart of history? Here's the program for the weekend of September 20 and 21, 2025. [Read more]



Heritage Days 2025: leatherworking demonstration at Château de Blandy-les-Tours (77)
Château de Blandy les Tours comes to life for the Journées du Patrimoine 2025! On September 20 and 21, come and discover this Seine-et-Marne fortified castle, and get ready for a wonderful program of arts and crafts. [Read more]



Heritage Days 2025: free show at Château de Champs-sur-Marne (77)
For the Journées du Patrimoine 2025, the Château de Champs-sur-Marne is offering an artistic program to be discovered on Sunday, September 21, 2025. [Read more]



Heritage Days 2025: visit the archaeological site of the town of Pincevent (77)
On Saturday September 20 and Sunday September 21, 2025, the Journées de Patrimoine return to Paris and the Île-de-France region. Join us in Pincevent, in the Seine-et-Marne département, to discover the town's archaeological site through a special program. [Read more]



Heritage Days 2025: events at the Château du Grand Jard in Voisenon (77)
The Journées du Patrimoine (Heritage Days) take over the Paris region this weekend, September 20-21, 2025. In Seine-et-Marne, a program of special visits awaits us at the Château du Grand Jard, in the commune of Voisenon. [Read more]



Heritage Days 2025 at Château de Bourron (77): program
In Seine-et-Marne, the Château de Bourron invites us to experience a special program on the occasion of the Heritage Days, on the weekend of September 20 and 21, 2025. We tell you more about what's in store. [Read more]



Heritage Days 2025 at the Château de Fontainebleau (77): a lively weekend at the château
The Château de Fontainebleau is taking part in the Journées du Patrimoine 2025, on September 20 and 21. We reveal the program for this magnificent Seine-et-Marne château. [Read more]



Heritage Days 2025 in Fontainebleau (77): the program for this exceptional weekend
The Journées du Patrimoine (Heritage Days) take place on the weekend of September 20 and 21, 2025 in Paris and the Île-de-France region. This is your chance to stop off in the sublime town of Fontainebleau, in the Seine-et-Marne region, where a great program of visits and events awaits you! Ready to immerse yourself in the heart of this Île-de-France nugget? [Read more]



Heritage Days 2025: discover Brie-Comte-Robert and its historic monuments (77)
The Journées du Patrimoine are the perfect opportunity to discover and rediscover Brie-Comte-Robert's cultural treasures. Here's what to do on September 20 and 21, 2025. [Read more]



Heritage Days 2025: not-to-be-missed tours in Moret-Loing-et-Orvanne (77)
The pretty medieval town of Moret-Loing-et-Orvanne offers a host of activities and visits to enjoy during the 42nd Journées du Patrimoine, held from September 20 to 21, 2025. [Read more]



Heritage Days 2025 in Melun (77): the program
Every year, the Journées du Patrimoine (Heritage Days) bring you a program packed with cultural highlights! Discover the tours and events awaiting you in Melun, Seine-et-Marne for this exceptional weekend of September 20 and 21, 2025. Here's what's in store! [Read more]



Heritage Days 2025 in Saint-Mammès (77): visits and events on the program
The Journées du Patrimoine are back. This year, on the weekend of September 20 and 21, 2025, the 42nd edition of the Journées du Patrimoine promises to be an absolute blast! This is your chance to conquer the town of Saint-Mammès, in Seine-et-Marne, where a vast program of visits and events awaits you. [Read more]



Heritage Days 2025 at Provins (77) in the heart of a historic medieval town
During the Journées du Patrimoine 2025, what would you say to an immersion in the heart of the Middle Ages? In Seine-et-Marne, the town of Provins and its medieval city, a UNESCO World Heritage Site, unveils its program of visits and events for the weekend of September 20 and 21, 2025. Here's what's in store! [Read more]



Heritage Days 2025 in Coulommiers, Seine-et-Marne (77): the town's program
On the weekend of September 20 and 21, 2025, the Journées du Patrimoine (Heritage Days) will be taking place in Paris and throughout the Île-de-France region, offering an exciting program of visits and events. In Coulommiers, Seine-et-Marne, a wide range of events awaits you! Find out what's on the menu for this exceptional weekend. [Read more]



Heritage Days 2025: what to do in Avon (77)? Visits on the program!
Looking for something to do in Seine-et-Marne for the Journées du Patrimoine 2025 in the Paris region? Here's what the town of Avon has in store for the weekend of September 20-21, 2025. [Read more]



Heritage Days 2025 in Bourron-Marlotte (77): visits on the program this weekend
The Journées du Patrimoine return this year on the weekend of September 20 and 21, 2025. For the occasion, a rich program is being prepared in Bourron-Marlotte, Seine-et-Marne. We reveal the details of the visits and events planned for this 41st edition! [Read more]



Heritage Days 2025 in Lagny-sur-marne (77): the program in the town
The Journées du Patrimoine (Heritage Days) are making a comeback on the weekend of September 20 and 21, 2025. For the occasion, a number of visits and events await you in Lagny-sur-Marne, Île-de-France. [Read more]



Heritage Days 2025 in Nemours (77): many cultural events on the program
The town of Nemours is getting ready to share its finest treasures with you for the Journées du Patrimoine (Heritage Days). Join us on the weekend of September 20 and 21, 2025, to take advantage of the city's tours and events! [Read more]



Heritage Days 2025 in Bussy-Saint-Martin (77): what to expect!
The town of Bussy-Saint-Martin takes part in the Journées du Patrimoine. Discover the program for the weekend of September 20-21, 2025. A great idea for a day out in Seine-et-Marne! [Read more]



Journées du Patrimoine 2025 in Meaux (77): weekend program of visits and events
The Journées du Patrimoine will be held on the weekend of September 20 and 21, 2025, in Paris and the Ile-de-France region. This is your chance to discover the treasures of the town of Meaux in Seine-et-Marne! Here's the detailed program of visits and events for this exceptional weekend! [Read more]



Heritage Days 2025 in Seine-et-Marne: What to do in Thomery (77)?
The Journées du Patrimoine (Heritage Days) take place on the weekend of September 20 and 21, 2025 in Paris and the Ile-de-France region. For this 42nd edition, the town of Thomery, in Seine-et-Marne (77), is unveiling several tours and events to discover its treasures. Here's the program for this not-to-be-missed cultural event! [Read more]



Heritage Days 2025 in Vert-Saint-Denis (77): the town's program
Looking for great places to go out in Seine-et-Marne this Heritage Days 2025? Find out what the town of Vert-Saint-Denis has in store for you over the weekend of September 20 and 21, 2025. [Read more]



Journées du Patrimoine 2025 (Heritage Days 2025): visits to castles in Seine-et-Marne (77)
The Journées du Patrimoine (Heritage Days) also invite you to discover the châteaux of 77. In Seine-et-Marne, a great program awaits you in these royal residences: discover the ideas for outings this weekend of September 20 and 21, 2025. [Read more]
These many events will help you to appreciate the Seine-et-Marne and its heritage during the Heritage Days weekend !
Dates and Opening Time
From September 20, 2025 to September 21, 2025