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.
Heritage Days 2026 at the Molitor Pool: artist cabins and Art Deco in Paris
The Molitor pool, tucked away in Paris’s 16th arrondissement, is taking part in Heritage Days 2026. Make sure to be there on Sunday, September 20, to discover a genuine gem of Parisian Art Deco. [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: take a peek behind the scenes at La Gaîté Lyrique
La Gaîté Lyrique offers a backstage glimpse as Paris launches a new edition of Heritage Days. On Sunday, September 20, 2026, join us to discover its remarkable history through a series of guided tours (accessible by reservation only). [Read more]
Heritage Days 2026: The European House in Paris unveils its program
The European House will take part in the Heritage Days in Paris with tours and special activities on 19 and 20 September 2026. A chance to discover this hub for European exchange and the weekend’s lineup. [Read more]
Journées du Patrimoine 2026 à l'Observatoire de Paris : free guided tour of the historic building
The Paris Observatory swings into the rhythm of European Heritage Days 2026, inviting the public to a free guided tour on Sunday, September 20. [Read more]
Heritage Days 2026: discover the Hôtel de l'Industrie, Paris's temple of innovation
Heritage Days are back in Paris! On Sunday, September 20, 2026, seize this opportunity to explore historic sites that are usually closed to the public, including the Hôtel de l’Industrie. [Read more]
Heritage Days 2026 at the House of Latin America in Paris
Craving a weekend off the beaten path? On Sunday, September 20, 2026, step through the doors of the Maison de l’Amérique latine in Paris for a rare, reservation-only tour during the Journées du Patrimoine. A venue steeped in history where grand townhouses, hidden gardens, and Latin–French heritage converge in the heart of Saint-Germain. [Read more]
Paris Heritage Days 2026: explore the history of the Sainte-Geneviève Library
For Heritage Days 2026 in Paris, the Sainte-Geneviève Library invites you to dive into its history. Discover the secrets of this treasure of the Latin Quarter this Sunday, September 20, 2026. [Read more]
Heritage Days 2026: tour of the construction site at the Church of the Holy Trinity in Paris
The Church of the Holy Trinity opens its doors for Heritage Days on Sunday, September 20, 2026. On the agenda: a tour of the church, which is currently undergoing restoration. [Read more]
Heritage Days 2026 at Saint-Vincent-de-Paul Church in Paris, free guided tours.
On the occasion of the 43rd edition of Heritage Days, Saint-Vincent-De-Paul Church welcomes visitors for guided, free tours on Sunday, September 20, 2026. [Read more]
Set out to conquer the Moulin d'Ors for Heritage Days 2026
For the 2026 Heritage Days, the spotlight is on Moulin d’Ors in Châteaufort, in Yvelines. A former wheat mill in the Chevreuse valley, it alone bears witness to centuries of local history and hydraulic heritage. [Read more]
Heritage Days 2026: tour and activities at the Drancy Shoah Memorial
On Sunday, September 20, 2026, the Shoah Memorial in Drancy will take part in Heritage Days with a special, free program for everyone. [Read more]
Bierville Castle to Open Its Doors for Heritage Days 2026
The European Heritage Days return on 19 and 20 September 2026. On this occasion, Château de Bierville, in Boissy-la-Rivière, Essonne, will open its doors to visitors for an exceptional showing. A rare opportunity to discover a site steeped in history, closely tied to Île-de-France heritage and the social commitments of the 20th century. [Read more]
Heritage Days 2026: visit the André Derain House, the workshop of a Fauvist master (78)
Let your eyes wander and your footsteps stray for Heritage Days on Sunday, September 20, 2026. In Chambourcy, in the Yvelines (75), the André Derain House-Museum reveals the Fauvist master's studio and other flamboyant keepsakes from the 20th century. [Read more]
Heritage Days 2026: offbeat and free activities at the Désert de Retz (78)
For the 2026 Heritage Days, a one-of-a-kind experience awaits you at the Désert de Retz in Chambourcy, Yvelines, this Sunday, September 20, 2025. A picturesque, romantically framed journey into a site steeped in history and architectural wonders. [Read more]
Heritage Days 2026 at L'Abominable, the site of the former Éclair laboratories in Épinay-sur-Seine
Are you into cinema? Take advantage of Heritage Days on Sunday, September 20, 2026, to tour the shared film laboratory L'Abominable, housed in the former Éclair laboratories in Épinay-sur-Seine. [Read more]
Heritage Days 2026 at the Versailles City Hall (78): free tours of the landmark.
The Heritage Days 2026 invite you to see Versailles in a new light. On Sunday, September 20, 2026, uncover the secrets of the royal city with an exclusive tour of the Hôtel de Ville, a historic monument and former estate 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]
Period costumes and a bread oven: Heritage Days program at Fort de Cormeilles-en-Parisis
Visit Fort de Cormeilles during the Heritage Days on Sunday, September 20, 2026. This former military fort, now owned by the Île-de-France Regional Green Spaces Agency, opens its doors to families and history buffs, free of charge, of course! [Read more]
Heritage Days 2026: Discover the stunning Château de Neuville (78) during guided tours
During the 2026 Heritage Days, the Château de Neuville, located in Gambais in the Yvelines (78), opens its doors for exceptional guided tours on Sunday, September 20. If you’re after a cultural escape, this is the perfect plan you’ve been waiting for! Ready to discover this treasure of Yvelines heritage? [Read more]
Heritage Days 2026 at the Île-de-France Prehistory Museum (77): the program
The Île-de-France Prehistory Museum in Nemours opens its doors to archaeology enthusiasts for Heritage Days this Sunday, September 20, 2026, with a special lineup of events. [Read more]
Heritage Days 2026 at Château de Bourron (77): discover the "little Fontainebleau"
In Seine-et-Marne, Château de Bourron invites visitors to a special Heritage Days program on Sunday, September 20, 2026. [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: venues open only on Saturdays in Paris and Île-de-France
The Heritage Days take place over the weekend of September 19 and 20. However, not all venues stay open for both days: here are the sites to visit exclusively on Saturday, September 19, 2026. [Read more]
Dates and Opening Time
On September 20, 2026
Prices
Free
Heritage Days 2026: venues open only on Saturdays in Paris and Île-de-France
