The Journées du Patrimoine (Heritage Days ) are held on the third weekend of September, and every year they give us the chance to visit incredible places, famous or forgotten, popular or usually inaccessible.
This cultural event marks its 43rd edition, on September 19 and 20, 2026. For the occasion, across Paris and in Île-de-France, thousands of artistic, historical, religious, political, or simply offbeat sites throw open their doors. And more often than not, it’s free! Whether you’re passionate about sport, fashion, trains, gastronomy, art, the military or the judiciary, history or cinema, you’re sure to find a place to visit during this festive and popular weekend.
Big events like this require a bit of planning ahead... if only to make sure the place you want to visit is actually open. Indeed, several participating sites open their doors for just one day over the weekend. If you want to stroll with peace of mind, here is a selection of places that are only open on Sunday, September 20, 2026.
Insolite : Take a tour of the Bercy Arena during Heritage Days 2026
For the first time, Paris Bercy Arena opens its doors to curious visitors during Heritage Days 2026. Join a guided tour to discover the venue’s show hall. [Read more]
Heritage Days 2026: discover Paris' oldest armory
During these Heritage Days 2026, the Coudurier Armory opens its doors to the curious and the enthusiasts. Meet us on Sunday, September 20, to discover the capital's oldest armory. [Read more]
Heritage Days 2026 at Molitor Pool: Paris’s Art Deco jewel
Molitor swimming pool, tucked away in Paris’s 16th arrondissement, is taking part in Heritage Days 2026. Mark your calendar for Sunday, September 20, to discover a true jewel of Parisian Art Deco. Book your visit without delay. [Read more]
Heritage Days 2026: screenings at the Short Film Agency in Paris
For Heritage Days, the Short Film Agency, based in the 15th arrondissement, invites you to guided tours and other screenings on Sunday, September 20, 2026. [Read more]
Heritage Days 2026 in Paris: step behind the scenes at Gaîté Lyrique
On the occasion of the latest edition of the Journées du Patrimoine in Paris, La Gaîté Lyrique opens its backstage. On Sunday, September 20, 2026, the public will be invited to discover its turbulent history through a series of guided tours, available by advance booking only. [Read more]
Heritage Days 2026: tours and activities at the House of Europe in Paris
The Maison de l’Europe will take part in Paris’s Heritage Days, offering a program of guided tours and activities on September 19 and 20, 2026. A great opportunity to explore a venue dedicated to European issues and dialogue among citizens. [Read more]
European Heritage Days 2026 at the Paris Observatory: a journey into the stars
The Paris Observatory is getting into the rhythm of this new edition of European Heritage Days by inviting the public to a free tour on Sunday, September 20, 2026. [Read more]
Heritage Days 2026: step inside the Hôtel de l'Industrie, Paris's temple of innovation
Heritage Days are back in Paris! On Sunday, September 20, 2026, seize the chance to explore historic venues that are often off limits to the public, such as the Hôtel de l’Industrie. Book your visit without delay. [Read more]
Heritage Days 2026: Discover the House of Latin America in Paris
Craving a getaway off the beaten path? On Sunday, September 20, 2026, swing open the doors of the Maison de l’Amérique latine in Paris for a rare, reservation-only tour as part of the Journées du Patrimoine. A site steeped in history, where grand townhouses, hidden gardens, and Latino-French heritage converge in the heart of Saint-Germain. [Read more]
Heritage Days 2026 in Paris: visit the Sainte-Geneviève Library, a listed historic monument.
For the 43rd edition of Heritage Days in Paris, the Sainte-Geneviève Library invites you to delve into its history. Discover the secrets of this Latin Quarter treasure this Sunday, September 20, 2026. [Read more]
Heritage Days 2026: Explore the Church of the Holy Trinity in Paris
The Church of the Holy Trinity opens its doors during Heritage Days on Sunday, September 20, 2026. Reserve your visit slot without delay—spaces are limited. [Read more]
Heritage Days 2026 at Saint-Vincent-de-Paul Church in Paris: the program
In the context of Heritage Days, Saint-Vincent-De-Paul Church offers guided or self-guided tours, free of charge, on Sunday, September 20, 2026. Here's what to expect. [Read more]
Guided tours to the heart of Monsieur's Farm, Louis XVI's brother, for Heritage Days 2026.
For the 2026 Heritage Days, set off to explore Monsieur's Farm in Mandres-les-Roses. Dive into the history of this Val-de-Marne agricultural estate linked to the brother of Louis XVI. [Read more]
Heritage Days 2026: balcony concert at the Maurice Ravel House-Museum (78)
Head to Yvelines for Heritage Days, a department brimming with treasures to discover! On Sunday, September 20, 2026, the Maurice Ravel House-Museum invites you into the composer’s musical world. [Read more]
Heritage Days 2026 at Saint-Germain-en-Laye Town Hall (78)
Looking for a picturesque escape without leaving France? The European Heritage Days return on September 19–20, 2026, with a lineup of secret sites you can explore for free. Among them: the Town Hall of Saint-Germain-en-Laye, a historic edifice nestled in the heart of the royal town in the Yvelines (78). [Read more]
European Heritage Days 2026 at the Hôtel de Noailles in Saint-Germain-en-Laye (78): the program
Prêt.e.s à dénicher un trésor caché ? On September 19 and 20, 2026, the European Heritage Days invite you to step behind the doors of a little-known gem: the Hôtel de Noailles in Saint-Germain-en-Laye (Yvelines 78). An invitation to explore history, art, and architecture off the beaten track! [Read more]
This vineyard in the heart of the Yvelines opens its doors for the 2026 Heritage Days.
Ready to raise a glass to heritage? European Heritage Days 2026 offer a weekend that’s as cultural as it is wine-focused, on September 19 and 20. Set your sights on the Yvelines, at Domaine de La Bouche du Roi, for a getaway among rows of vines, historical tales, and sips to savour! [Read more]
For Heritage Days 2026, embark on a journey to discover this abbey in the heart of the Yvelines.
Set off to discover the medieval treasures of the Abbey of Our Lady of the Rock in Lévis-Saint-Nom, for the 2026 Heritage Days. Explore a well-preserved gem of the Yvelines, tucked in the heart of the Chevreuse valley. [Read more]
This hidden mill in Yvelines unveils itself for the 2026 Heritage Days
Off to Châteaufort to discover Moulin d’Ors, a 19th-century wheat mill and a striking witness to the history of the Chevreuse valley. [Read more]
Heritage Days 2026: the tour program at the Drancy Shoah Memorial
On Sunday, September 20, 2026, the Shoah Memorial in Drancy will take part in Heritage Days with a free program for everyone that day. [Read more]
In Forges-les-Bains, a castle opens its doors for the 2026 Heritage Days.
This Sunday, September 20, 2026, the Château de Forges-les-Bains will welcome the public for a special open day organized for Heritage Days. Here’s the program! [Read more]
This little-known château in Essonne will open to the public on an exceptional basis for the 2026 Heritage Days.
This Sunday, September 20, 2026, the Château de Bierville will exceptionally open its doors to the public on the occasion of the European Heritage Days. A chance to discover a place steeped in nearly a thousand years of history and a unique social commitment in Île-de-France. [Read more]
Heritage Days 2026 at the André Derain House (78): the program
Let yourself be swept up by the color and the brushwork of the great masters for European Heritage Days! They invite you to step through doors you’ve never seen before, such as in Chambourcy, in the Yvelines, where the André Derain House-Museum opens its studio and reveals the flamboyant treasures of Fauvism and the 20th century. [Read more]
Heritage Days 2026: an offbeat program at the Désert de Retz in Chambourcy (78)
For Heritage Days 2026, a bucolic experience is taking shape at the Désert de Retz in Chambourcy, Yvelines, this Sunday, September 20. On the agenda? Free activities in the heart of this beautiful green haven. [Read more]
Heritage Days 2026: L'Abominable, site of the former Éclair laboratories, opens its doors
Are you into cinema? Don’t miss Heritage Days on Sunday, September 20, 2026: take a tour of the shared film laboratory L'Abominable, housed in the former Éclair laboratories, in Épinay-sur-Seine (93). [Read more]
European Heritage Days 2026: Free tours of Versailles City Hall (78)
The 43rd Heritage Days invite you to see Versailles in a new light. On Sunday, September 20, 2026, discover the secrets of the royal city with an exclusive tour of the Hôtel de Ville, a historic monument and former home of one of Louis XIV’s daughters. [Read more]
A stroll through the glass towers of La Défense for the 2026 Heritage Days
Explore La Défense from a new angle with guided tours organized on Sunday, September 20, 2026 for Heritage Days. [Read more]
A festive Sunday at Fort de Cormeilles-en-Parisis for Heritage Days 2026
Visit Fort de Cormeilles during the 43rd edition of Heritage Days, on Sunday, September 20, 2026. This former military fortress, now owned by the Île-de-France Regional Green Spaces Agency, opens its doors to families and history enthusiasts, free of charge, of course! Here’s the program. [Read more]
This Yvelines château opens its doors for guided tours during Heritage Days 2026.
Want to conquer the castles of Île-de-France during the Heritage Days weekend on September 19–20, 2026? Here’s the Château de Neuville’s program, located in the Yvelines. [Read more]
Heritage Days 2026: what’s on at the Île-de-France Prehistory Museum (77)
The Île-de-France Prehistoric Museum in Nemours opens its doors to archaeology enthusiasts during the European Heritage Days on 20 September 2025. Check out the special program and reserve your tickets. [Read more]
Heritage Days 2026: A Sunday at Château de Bourron — the program
In Seine-et-Marne, the Château de Bourron invites visitors to a special program for Heritage Days on September 20, 2026. Here’s what you can expect. [Read more]
And there's no rest on Saturday: discover the sites that are only open that day for the Journées du Patrimoine in the Paris region. A wonderful weekend awaits you!
Heritage Days 2026: Saturday-only outings in Paris and Île-de-France
Heritage Days take place over the weekend of September 19 and 20, 2026. However, not all sites stay open for both days: here are the places to visit exclusively on Saturday, September 19. Don’t miss the boat! [Read more]
Dates and Opening Time
On September 20, 2026
Prices
Free
Heritage Days 2026: Saturday-only outings in Paris and Île-de-France
