Heritage Days 2026 in Paris and Île-de-France: walk-in visits this weekend.

Kick-off for the Heritage Days. This weekend of September 19–20, 2026, Paris and the entire Île-de-France will unveil its finest treasures and invite us to rediscover our heritage in a whole new light. Each year, museums, monuments, castles, and even venues rarely open to the public open their doors to grant us a program rich in unconventional activities, generally free visits and new experiences, including for children. A must-attend for the curious and the passionate!

If you've woken up a little late this year and missed out on booking, don't worry: many sublime venues are offering their programs without prior registration. Perfect for those who decide to take advantage of this event on a whim! So if you'd like to prepare your last-minute program, we've put together a list of spots offering free admission. There's no excuse for missing out on the Journées du Patrimoine in Paris and the Ile-de-France region.

Don't hesitate to consult this guide regularly to prepare your program without any headaches!

The no-reservation program for the 2026 Heritage Days in Paris and Île-de-France:

In Paris

Journées du Patrimoine 2025 in Paris: guided tours of the Musée Marmottan Monet
Come and discover the Musée Marmottan Monet, the Impressionist museum in Paris, with tours on September 20 and 21, 2025, on the occasion of the 42nd Journées du Patrimoine. [Read more]

Heritage Days 2026 at Maison La Roche – Le Corbusier Foundation in Paris, the programme
Back-to-school season means tucking away the flip-flops and lacing up the sneakers… and setting off to explore the capital’s hidden treasures. The spotlight is on the European Heritage Days, September 19-20, 2026, when museums, castles, and offbeat spots throw open their doors wide. In Paris, don’t miss Maison La Roche, a modernist masterpiece by Le Corbusier, a (re)discovery in the chic 16th arrondissement. [Read more]

Heritage Days 2026 in Paris: Women in the spotlight at Espace Monte-Cristo
L'Espace Monte-Cristo invites you to the weekend of September 19–20, 2026 to discover its special, free activities as part of the Heritage Days. [Read more]

Heritage Days 2026: The program at Paris’s arrondissement town halls
The Paris arrondissement town halls open their doors to us on the weekend of September 19–20, 2026: discover the activities planned for this new edition of the Journées du Patrimoine. [Read more]

Set off to discover Paris's little-known sewer museum during Heritage Days.
The Paris Sewer Museum is taking part in the 43rd edition of Heritage Days. Mark your calendars for Saturday, September 19 and Sunday, September 20, 2026, for offbeat tours into the underground of Paris. [Read more]

Heritage Days 2026 in Paris: visit the offbeat Saint-Jean-l'Évangéliste-de-Montmartre Church
European Heritage Days are the perfect chance to discover the treasures tucked away in the capital’s museums, buildings and monuments! Head to Saint-Jean-l'Évangéliste-de-Montmartre Church for an organ recital on the weekend of September 19–20, 2026. A unique opportunity to discover this remarkable structure perched on Montmartre Hill. [Read more]

Journées du Patrimoine 2026 à Paris : promenades à la découverte du Jardin des Tuileries
For Heritage Days in Paris, the Jardin des Tuileries invites you to dive into its history. "guided walks" await you on Saturday 19 and Sunday 20 September 2026. Enjoy this stroll at the heart of Paris. [Read more]

Heritage Days 2026: the Bastille Design Center puts its past in the spotlight and champions the artists of tomorrow
You may have already visited the Bastille Design Center during a trade show or event. But are you familiar with its history? Discover it during the weekend of September 19–20, 2026, as part of Heritage Days. [Read more]

Heritage Days 2026: guided tour and organ recital at Saint-Gervais-Saint-Protais Church
The Saint-Gervais-Saint-Protais Church in Paris invites us to spend a special weekend for the Heritage Days 2026. Join us on September 19 and 20 to discover this monument. [Read more]

For Heritage Days 2026, the Institut de France is opening its doors, exceptionally.
The Institut de France will take part in the 43rd edition of the European Heritage Days, which will be held on Saturday, September 19 and Sunday, September 20, 2026. This is an opportunity to discover one of Paris's lesser-known institutions, rich in history and tradition. [Read more]

Heritage Days 2026: a family-friendly treasure hunt this weekend at the Petit Palais in Paris.
On the occasion of the 2026 Heritage Days in Paris, the Petit Palais unveils a special program for the weekend of September 19–20, 2026. Discover what awaits you for these Heritage Days 2026! [Read more]

Fashion know-how in the spotlight at 19M for Heritage Days 2026
The backstage of fashion opens its doors at 19M! The artisans and craftspeople reveal studios, techniques and know-how usually hidden from view for Heritage Days, on September 19 and 20, 2026. [Read more]

Journées du Patrimoine 2026: the International Metapsychic Institute reveals its research into the paranormal
What’s happening behind the doors of the Institut Métapsychique International? Heritage Days let Paris-based visitors explore its archives, its collections, and its research on the paranormal and consciousness, on 19 and 20 September 2026. [Read more]

In Paris, during the 2026 Heritage Days, discover the Maison d’Ourscamp, tucked away in the heart of the marsh.
For the 2026 Heritage Days in Paris, discover the Maison d'Ourscamp, one of the few remaining examples that blend medieval and Renaissance architecture in the city. Join us on Saturday, September 19 and Sunday, September 20, 2026 for a free family outing, highlighted by guided tours. [Read more]

Heritage Days 2026: Discover Balzac's House in Paris's 16th arrondissement
Balzac’s House shines a spotlight on the writer’s world during Paris’s Heritage Days on September 19–20, 2026. Nestled in the 16th arrondissement, this literary museum invites visitors to explore Balzac’s former home, its collections, and the places that inspired much of his work. [Read more]

Heritage Days 2026: Explore the Ministry of Agriculture at the Hôtel de Villeroy
The prestigious Hôtel de Villeroy welcomes visitors to Paris for the European Heritage Days on September 19-20, 2026. This open-door event offers a chance to explore the Ministry of Agriculture’s headquarters, its architecture, its drawing rooms, and the history of this hôtel particulier in the 7th arrondissement. [Read more]

Heritage Days 2026: what secrets does the Sorbonne Chapel hide in the Latin Quarter?
Few visitors get the chance to step inside the Sorbonne Chapel. Heritage Days will exceptionally open this 5th‑arrondissement landmark, with its monumental dome, the history of the university and Richelieu’s memory, on 19 and 20 September 2026. [Read more]

Heritage Days 2026: Behind the scenes at the legendary Hôtel du Nord in Paris
On the banks of the Canal Saint-Martin, the Hôtel du Nord opens to the public during Heritage Days on 19 and 20 September 2026. A guided tour to explore the story behind this iconic address, where Parisian heritage meets the memory of French cinema. [Read more]

Heritage Days 2026: discover Hôtel d'Heidelbach, Maison Guimet's Asian jewel box
Hôtel d'Heidelbach, now Maison Guimet, participates in Paris's Heritage Days with tours devoted to Asian arts, on September 19 and 20, 2026. An opportunity to discover this 16th-century townhouse, its Japanese garden, and its exceptional collections. [Read more]

Heritage Days 2026: explore the John the Fearless Tower and Medieval Paris.
Medieval Paris comes alive again at the Tour Jean-Sans-Peur during Heritage Days on September 19 and 20, 2026. This tour offers a glimpse of one of the final vestiges of the Dukes of Burgundy’s palace in the heart of the capital. [Read more]

Heritage Days 2026: a historic church to explore near the Eiffel Tower
What did the Gros-Caillou neighborhood look like before the Eiffel Tower? Heritage Days offer a chance to find out by stepping through the doors of Saint-Pierre-du-Gros-Caillou Church, in Paris’s 7th arrondissement, on September 19 and 20, 2026. [Read more]

Heritage Days 2026: a church in the 6th arrondissement shaped by the French Revolution
What lies behind the walls of Saint-Joseph-des-Carmes Church in the 6th arrondissement? The Heritage Days invite you to explore this historic Paris site and its religious heritage on September 19 and 20, 2026. [Read more]

European Heritage Days 2026: discover Saint George's Anglican Church in the 16th arrondissement
Religious heritage, British history and architecture come together at St. George's Anglican Church for Heritage Days, on September 19 and 20, 2026. The event offers a chance to explore a discreet address in the 16th arrondissement that is usually little known to the general public. [Read more]

Heritage Days 2026: Saint-Georges Chapel opens in Paris for a one-off event
Looking to discover a little-known corner of Paris? La Chapelle Saint-Georges is taking part in Heritage Days with an exceptional opening on September 19 and 20, 2026. A visit that history and architecture enthusiasts won’t want to miss. [Read more]

The Arc de Triomphe will be free this weekend for Heritage Days 2026.
You read that correctly: the Arc de Triomphe, the iconic monument that crowns the famous Champs-Élysées, can be visited for free and without advance booking during this Heritage Days weekend 2026, on September 19 and 20! Here’s what you need to know. [Read more]

Heritage Days 2026: Paris's Chaptal High School opens its doors to the public, exceptionally.
A new, 43rd edition of Heritage Days arrives on September 19 and 20, 2026! How about taking the opportunity to explore Lycée Chaptal during an open-house tour? See you this Saturday in the 8th arrondissement of Paris. [Read more]

Journées du Patrimoine 2026 in Paris: a free weekend at the Musée de la Vie romantique
For the 2026 Heritage Days in Paris, the Musée de la Vie romantique invites us to reconnect with Romantic Paris. Discover the standout program to experience this weekend of September 19–20, 2026. [Read more]

Journées du Patrimoine 2026 à Paris : découvrez l'Église Saint-Nicolas-du-Chardonnet Heritage Days 2026 in Paris: Discover Saint-Nicolas-du-Chardonnet Church
For Paris’ Heritage Days 2026, head to the Left Bank to discover Saint-Nicolas du Chardonnet Church. Visitors will marvel at the treasures of this worship site, which today remains one of the emblematic strongholds of active traditionalist Catholicism in Paris. Join us the weekend of September 19–20, 2026 in the 5th arrondissement to uncover its history. [Read more]

European Heritage Days 2026: a free weekend at the Museum of the Liberation of Paris
For the 43rd edition of Heritage Days, the Museum of the Liberation of Paris — General Leclerc Museum — Jean Moulin Museum invites you to free tours and activities on Saturday, September 19, and Sunday, September 20, 2026. Here is the program. [Read more]

Paris' Court of Audit opens its doors for Heritage Days 2026
It's the grand return of the Journées du Patrimoine this weekend of September 19–20, 2026, in Paris and Île-de-France! An opportunity to uncover the secrets of the capital's grand institutions, including the Cour des Comptes, which unveils a rich program of tours and activities, no reservation required. Here's what's in store. [Read more]

Special free visit to the Panthéon for Heritage Days 2026
The Panthéon invites itself to the 43rd Heritage Days: the monument will open its doors for free on September 19 and 20, 2026. A must-see in Paris! [Read more]

Heritage Days 2026: take a tour of the Mobilier National’s reserves and restoration workshops.
For European Heritage Days, the Gobelins Manufactory is offering an unprecedented behind-the-scenes tour at the heart of exceptional craftsmanship on September 19 and 20, 2026. A real treat in store! [Read more]

Heritage Days 2026: self-guided tour of the Élysée Palace, the museum at the Presidential Palace
The European Heritage Days are back on 19 and 20 September 2026 for a new edition, even more offbeat. And this year, just steps from the presidential palace, the Élysée House invites you to go behind the scenes of the republic, among iconic rooms and diplomatic curiosities. Discover the program. [Read more]

Heritage Days 2026: A stroll through Cité Falguière, a hidden artistic treasure
Heritage Days 2026 unveil a hidden treasure: the Cité Falguière in Paris. Mark your calendars for September 19–20 for a unique voyage into the capital's artistic history during its 43rd edition. Discover the event program. [Read more]

Heritage Days 2026 at the Giacometti Institute in Paris: the weekend program
The Giacometti Institute invites Parisians and residents of Île-de-France to celebrate the 43rd edition of the Journées du Patrimoine. Curious visitors can discover the venues on guided tours on Saturday, September 19, and Sunday, September 20, 2026. Click here to view the program. [Read more]

Heritage Days 2026: Explore the Beautiful Saint-Laurent Church in Paris
For the new edition of Heritage Days in Paris, head to Saint-Laurent Church to discover this masterpiece of flamboyant Gothic right in the heart of the capital. On the program: guided tours of the building on Saturday, September 19 and Sunday, September 20, 2026. [Read more]

Heritage Days 2026 in Paris: family-friendly, hands-on workshops at the Musée des Arts et Métiers
The Musée des Arts et Métiers is taking part in Heritage Days on Saturday, 19 and Sunday, 20 September 2026, offering a free family-friendly visit and a range of activities. Discover the program! [Read more]

Tour the Duchess of Sully's apartments at the Hôtel de Sully during Heritage Days 2026.
For the upcoming edition of Heritage Days, the Duchess of the Hôtel de Sully’s apartments will exceptionally open their doors in the Marais on September 19 and 20, 2026. [Read more]

European Heritage Days 2026 in Paris: visit the little-known museum dedicated to the Curie family
Ahead of the new edition of Heritage Days, the Curie Museum opens its doors for the entire weekend of September 19–20, 2026, offering a deep dive into the history of the family with five Nobel Prizes. Attention, lovers of scientific heritage! [Read more]

European Heritage Days 2026: discover the prestigious Sorbonne University in Paris
For Heritage Days, the Sorbonne will host a range of events around this historic and cultural monument over the weekend of September 19–20, 2026. [Read more]

Heritage Days 2026: Explore the Hôtel de Noirmoutier, the residence of the Prefect of Île-de-France, this Saturday.
Exceptionally, on the occasion of the new edition of the Heritage Days, the Prefect of Île-de-France will open the doors to his official residence, the Hôtel de Noirmoutier, on Saturday, September 19, 2026. [Read more]

European Heritage Days 2026 at the Swedish Institute: come explore the Hôtel de Marle
For the 43rd edition of Heritage Days, the Swedish Institute in Paris invites you to guided tours of the building it calls home: the superb Hôtel de Marle. Meet on Saturday, 19 and Sunday, 20 September 2026 to discover this architectural gem in Paris! [Read more]

Heritage Days 2026 in Paris: Exceptional opening of the Senate at the Palais du Luxembourg this weekend
The Senate is taking part in Heritage Days 2026! Take advantage of the weekend of Saturday, September 19 and Sunday, September 20 to discover the Palais du Luxembourg, the Petit Luxembourg, not to mention the greenhouses of the Jardin du Luxembourg. An exceptional, must-see visit to do in Paris! [Read more]

European Heritage Days 2026: Guided tours to discover Notre-Dame-de-Lorette Church in Paris
Heritage Days are back in Paris this weekend, on Saturday 19 and Sunday 20 September 2026. It’s a chance to uncover some of the city’s patrimonial gems, notably the Notre-Dame-de-Lorette church. [Read more]

For the 2026 Heritage Days in Paris, the Museum of Plans-Reliefs is offering family-friendly tours and activities.
On the occasion of Heritage Days, the Paris Museum of Relief Maps invites people of all ages to discover the 28 relief maps on display at the heart of the Invalides and to try their hand at the art of model-making, on Saturday, September 19 and Sunday, September 20, 2026. [Read more]

European Heritage Days 2026: Maison Poincaré, Paris’s Mathematics Museum
The Maison Poincaré aims to help you fall in love with math this Saturday, September 19, 2026, with a range of activities organized for Heritage Days. Here’s the program for you. [Read more]

Dive into the heart of Victor Hugo's world for the 2026 Heritage Days.
On the occasion of the 43rd edition of Heritage Days in Paris, the home of a towering figure in French literature invites you to enjoy a special program. Over the weekend of September 19–20, 2026, embark on an immersion into the life of Victor Hugo! [Read more]

The Auguste Comte House to visit during the 2026 European Heritage Days in Paris.
The Maison d'Auguste Comte unveils its schedule for the weekend of September 19–20, 2026 in Paris, as part of the 43rd edition of Heritage Days. [Read more]

Heritage Days 2026: the program at Paris's National Institute for Deaf Children
For Heritage Days 2026, set off to discover the National Institute for Deaf Youth in Paris. Here’s what this 43rd edition has in store, taking place on Saturday, September 19 and Sunday, September 20. [Read more]

European Heritage Days 2026 Paris: exceptional opening of the Hôtel Pereire, Del Duca Foundation
Hôtel Pereire, home to the Simone and Cino Del Duca Foundation at the Institut de France, opens its doors for Heritage Days 2026. On September 19 and 20, dive into Parisian heritage and explore this historic building enriched with photos, videos, and archives. [Read more]

Heritage Days 2026 at Saint-Sulpice Church in Paris, the program
For the 2026 Heritage Days in Paris, Saint-Sulpice Church invites you to discover all of its secrets on Saturday, September 19 and Sunday, September 20, 2026. An opportunity to rediscover this Left Bank treasure. [Read more]

Guided tours at the heart of this Russian cathedral for Paris' 2026 Heritage Days
Heritage Days are back on the weekend of September 19–20, 2026! A chance to discover the Saint Alexander Nevsky Orthodox Cathedral in Paris. Here’s the program! [Read more]

Embark on a tour of this unusual townhouse for Paris’s 2026 Heritage Days.
Located in the heart of Paris, this grand townhouse with medieval architecture awaits you for the European Heritage Days 2026. Discover the program on offer for the weekend of 19–20 September 2026. [Read more]

Heritage Days 2026: discover the studio of the renowned sculptor Claude de Soria in Paris
The Heritage Days are back for a new edition on the weekend of September 19–20, 2026! From must-see tours of Parisian institutions to quirky, playful, and educational spaces... Set off to discover the capital and peek into the studios of Parisian artists, such as Claude de Soria’s, in the Montparnasse district. [Read more]

European Heritage Days 2026: discover the American Church in Paris, in the 7th arrondissement
During Heritage Days, the American Church in Paris invites you to uncover its secrets through guided tours on September 19 and 20, 2026. [Read more]

Exclusive tours of the National Academy of Surgery in Paris during Heritage Days!
When Heritage Days come around, exceptional openings are on the agenda: the National Academy of Surgery in Paris is joining in and will throw open its doors on Saturday, September 19, 2026. [Read more]

In the Île-de-France region

Heritage Days 2026: visit the King's Kitchen Garden at the Palace of Versailles for free (78)
For Heritage Days, head to Versailles! Not far from the château, the Potager du Roi invites you to enjoy two free days in a spellbinding setting, on September 20 and 21, 2026. On the program: tours and a host of activities for young and old alike! [Read more]

Yvelines: discover the mysterious Montgomery Mausoleum in Chevreuse during the 2026 Heritage Days
Craving a unique outing in Île-de-France? Heritage Days 2026 will take you to Chevreuse to explore the little-known Montgomery family mausoleum. [Read more]

Heritage Days 2026: Workshops and tours at the Château de Malmaison and Bois-Préau
For Heritage Days 2026, head to the Hauts-de-Seine, at the Château de Malmaison and Bois-Préau. Step back in time and come marvel at this monument on September 19 and 20. [Read more]

Seine-et-Marne: the fabulous outsider-art village of Chomo opens its doors for the 2026 Heritage Days.
Craving an off-the-beaten-path getaway in Île-de-France? For Heritage Days 2026, wander the Chomo Art Village in Seine-et-Marne, a fascinating open-air museum. [Read more]

Discover Château de la Madeleine during the 2026 Heritage Days.
For Heritage Days 2026, held on September 19–20, the Château de la Madeleine in Yvelines is offering special, free tours for everyone. Here’s the weekend program. [Read more]

Heritage Days 2026: a music-filled Sunday at the Maurice Ravel House-Museum (78)
Heading to the Yvelines for Heritage Days, a department teeming with treasures to discover! On Sunday, September 20, 2026, the Maurice Ravel House-Museum invites you into the composer’s musical universe. Here is the program for the day. [Read more]

Journées du Patrimoine 2026: circus arts, a medieval encampment and concerts at Domaine des Macarons de Réau
The Domaine des Macarons de Réau welcomes you to a delicious weekend on September 19–20, 2026, for Heritage Days. On the program: medieval animations, pony rides, wooden games, and even concerts! [Read more]

Heritage Days 2026: discover the Safran Museum, an aeronautical and space museum in Réau (Seine-et-Marne 77)
The Safran Aviation and Space Museum will also participate in Heritage Days on the weekend of September 19–20, 2026. Located in Réau, in Seine-et-Marne, the museum is putting on a full weekend of activities for the whole family. [Read more]

Heritage Days 2026: a Medieval Weekend at Blandy-les-Tours Castle (77)
The Blandy-les-Tours Castle Comes Alive for Heritage Days! On September 19 and 20, 2026, discover this fortress in Seine-et-Marne and gear up for an engaging lineup centered on crafts. [Read more]

The Dacha Program at the Ivan Turgenev Museum for Heritage Days 2026
The Datcha, Ivan Turgenev Museum, invites us to the 2026 Heritage Days on September 19 and 20, 2026. Here’s the program! [Read more]

Journées du Patrimoine 2026 au Potager du Dauphin à Meudon : ce week-end, le programme
With the season back in full swing, we gather to celebrate heritage in style. On September 19 and 20, 2026, the Journées du Patrimoine throw open the doors to legendary sites—and to hidden gems. In Meudon, the Potager du Dauphin is coaxing its royal past to the fore and letting top‑notch craftsmanship bloom under the open sky. [Read more]

Journées du Patrimoine 2026 au Musée vivant du Chemin de fer (Ajecta) : le programme Heritage Days 2026 at the Living Railway Museum (Ajecta): the program
On 19 and 20 September 2026, take advantage of the special rates offered for European Heritage Days to visit the Living Museum of the Railway in Longueville (77), where steam locomotives and vintage rolling stock bring more than 150 years of railway history to life. [Read more]

Heritage Days 2026: An immersion in the heart of the photographer behind a fashion photographer
On the occasion of Heritage Days 2026, on September 19, the renowned fashion photographer Frank Horvat’s studio-house will be open to the public. Based in Boulogne-Billancourt, it invites visitors to explore half a century of photographs and archives, presented by the artist’s own daughter. An unmissable event for fashion enthusiasts. [Read more]

Shows and games at the Château de Saint-Jean de Beauregard: the Heritage Days program
On the occasion of the 43rd edition of Heritage Days, Château Saint-Jean de Beauregard invites you to join us on 19 and 20 September 2026. As part of these discovery-focused days, guided tours of the château and its gardens will be offered, along with a few surprise activities... [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]

Heritage Days 2026: discover the secret ice houses and the Vanves chapel (92)
Dive underground in Vanves for Heritage Days 2026 and discover a former 18th-century icehouse that has been repurposed as an unusual prayer space. [Read more]

Heritage Days 2026: free treasure hunt and concert at the château in Soisy-sur-Seine (91)
Heading to Essonne and the town of Soisy-sur-Seine for the new edition of Heritage Days 2026! On September 19 and 20, explore the town with a family-friendly treasure hunt and enjoy the castle through a range of activities. [Read more]

Heritage Days 2026: A tour of the medieval town and its crypt in Château-Landon (77)
For Heritage Days, the medieval town of Château-Landon invites you to join them on 19 and 20 September 2026 for an exceptional tour through its monuments, including the lesser-known ones, in the heart of Seine-et-Marne. [Read more]

Drones, a parade and a concert at the Departmental Firefighters Museum: Heritage Days 2026 program
The Departmental Firefighters Museum of Val d'Oise, based in Osny, is taking part in the latest edition of Heritage Days, inviting children and adults alike to discover the firefighting profession on 19 and 20 September 2026. [Read more]

This rock-cut church will be open to visitors for Heritage Days 2026.
European Heritage Days throw open the doors to Paris and Île-de-France’s hidden gems on 19 and 20 September 2026. In Val-d’Oise (95), set your sights on Haute-Isle for a mineral immersion inside the region’s only troglodyte church, carved straight into the cliff face. [Read more]

Puzzle hunt and guided tours at the Pissaro Museum in Pontoise: the Heritage Days 2026 program
The Pissarro Museum participates in the new edition of Heritage Days. Housed on the site of a former medieval castle, the museum honors painter Camille Pissarro, who spent 17 years in Pontoise. On Saturday, September 19 and Sunday, September 20, 2026, discover the museum and its gardens, while enjoying a stunning view over the Val-d’Oise. A prime pick for this weekend of culture. [Read more]

(Re)discover the necropolis of the kings of France and its medieval garden during Heritage Days 2026.
The Basilica of Saint-Denis, renowned for housing France’s royal necropolis, unveils a rich lineup for the 2026 Heritage Days. An organ concert, activities, and even special tours of its medieval garden — here’s what to expect on September 19 and 20, 2026. [Read more]

Heritage Days 2026 at Rambolitrain Museum: a visit and a family train ride
Do you know Rambolitrain? This quirky miniature-train museum is opening its doors on the weekend of September 19–20, 2026, for Heritage Days. Bring family or friends and discover this playful venue and its fascinating collections, free of charge. [Read more]

A weekend of activities for the 2026 Heritage Days at the Air and Space Museum!
Looking for a great, playful idea for a day out during Heritage Days? Activities await kids and adults at the Air and Space Museum on the weekend of September 19–20, 2026. [Read more]

Heritage Days 2026 at the Maison des Italiens in Versailles — the program
On 19 and 20 September 2026, the European Heritage Days invite us to lift the veil on unusual and emblematic sites across France. This year, head to the Yvelines to explore the Maison des Italiens in Versailles, an elegant listed townhouse that’s ready to reveal its secrets. [Read more]

Heritage Days 2026: a historical reenactment at the Val-d'Oise Archaeological Museum (95)
As part of the 43rd Heritage Days, the Archaeological Museum of Val-d'Oise invites you to explore its program for the weekend of September 19–20, 2026. And what if we plunge into the fascinating world of archaeological heritage? [Read more]

Heritage Days 2025 in Le Vésinet (78): discover Wood Cottage, an offbeat gem of Yvelines
For the 2025 Heritage Days, come and admire a true architectural jewel in Le Vésinet: the Wood Cottage, a distinctive residence that seems to have stepped straight out of a fantasy film. [Read more]

Heritage Days 2026 at the Jean-Jacques Rousseau Museum in Montmorency (Val-d'Oise): workshops and exhibitions on the program
For Heritage Days, the Jean-Jacques Rousseau Museum in Montmorency, Val-d'Oise (95), invites you to a special weekend program for September 19 and 20, 2026. More details to come! [Read more]

Heritage Days 2026: the program at Poissy's Maison de Fer (78)
What to do for Heritage Days 2025 in Yvelines? In Poissy, this is your chance to (re)discover the Iron House on September 19, 2026. Discover this astonishing and one-of-a-kind building, whose visit should delight lovers of architectural gems. [Read more]

Heritage Days 2026 at Villa Savoye (78): what's on
The Villa Savoye will open its doors for free on 19 and 20 September 2026, as part of the new edition of Heritage Days. Discover the weekend’s program. [Read more]

Special opening of the park at Château de Bourdonné (78) for the 2026 Heritage Days
Private property closed to the public, the Château de Bourdonné will exceptionally open the gates to its verdant grounds for the Heritage Days 2026. A chance to discover this elegant Louis XIII–style residence in the heart of a Yvelines town, as seen from its gardens! [Read more]

Heritage Days 2026 in Houdan (78): the program for the medieval town
Nestled in the heart of Yvelines, a charming medieval town still hides a wealth of relics from the Middle Ages—dungeons, ramparts, and old inns. For Heritage Days on September 19 and 20, 2026, come and discover them in Houdan! Here’s what awaits you for this exceptional weekend. [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]

Journées du Patrimoine 2026: events at the Urban Transport Museum in Chelles (77)
The Urban Transport Museum in Chelles is opening its doors to the public free of charge for Heritage Days this weekend, September 19–20, 2026. Come and explore more than 70 transport vehicles dating from 1863 to the present as part of a special program. [Read more]

Family activities and museum tours at the Jouy Textile Museum for Heritage Days 2026
For European Heritage Days 2026, on September 19 and 20, the Musée de la Toile de Jouy welcomes curious visitors and is planning free activities in the Yvelines. [Read more]

Heritage Days 2026: Visit Château de Breteuil (78) for an immersive history experience.
The Château de Breteuil participates in Heritage Days on the weekend of September 19–20, 2026. During this day, visitors can tour the Château des Contes de Perrault, but note: admission remains payable. [Read more]

Heritage Days 2026: An exceptional tour of an air-raid shelter in Bourg-la-Reine, Hauts-de-Seine
During the 2026 Heritage Days, immerse yourself in history and discover a genuine World War II air-raid shelter in Bourg-la-Reine, on 19 and 20 September 2026. An exceptional visit that’s well worth the detour! [Read more]

Heritage Days 2026: Conflans-Sainte-Honorine's Batellerie Museum program (78)
They're back: on the weekend of Saturday, September 19 and Sunday, September 20, 2026, the Journées du Patrimoine invites us to a new edition in Paris and Île-de-France. Over in Conflans (78), head to the Batellerie and Inland Waterways Museum for a special program! [Read more]

Heritage Days 2026: this weekend’s lineup at Archéa, the archaeological museum in Louvres (95)
For Heritage Days, Archéa, the archaeology museum in Pays de France, based in Louvres in Val-d'Oise (95), invites you to special tours on Saturday, September 19 and Sunday, September 20, 2026. Here’s the program for the 43rd edition! [Read more]

Exclusive tours and a never-before-seen exhibition at the Château d'Écouen for the 2026 Heritage Days.
The Château d'Écouen and its Renaissance museum are taking part in Heritage Days on Saturday, 19 and Sunday, 20 September 2026. Take advantage of free guided tours for visitors of all ages. [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]

Heritage Days 2026: the Beaumont Palace cinema, a listed historic monument, opens its doors
On the occasion of Heritage Days, this Saturday, September 19 and Sunday, September 20, 2026, the Val-d'Oise’s best-known cinema reveals a different side. Find out what's on this weekend. [Read more]

Treasure hunt and activities at Victor Hugo’s literary home for Heritage Days 2026
Victor Hugo’s literary house in Bièvres, in the Essonne department, will open its doors free of charge to the public on the weekend of September 19–20, 2026, for Heritage Days. [Read more]

Heritage Days 2026: treasures to discover in the town of Sucy-en-Brie (94)
For the new edition of Heritage Days, the town of Sucy-en-Brie is lining up a host of tours and encounters. It’s an opportunity to discover the town in a different light on Saturday, September 19 and Sunday, September 20. [Read more]

Gourmet market, vintage cars and guided tours: Heritage Days 2026 at the Château de Mesnil-Voysin
The Château de Mesnil-Voysin, located in Bouray-sur-Juine, is set to welcome visitors this weekend, September 19–20, 2026, with a rich lineup prepared for Heritage Days. [Read more]

Heritage Days 2026 in Rosny Rail, the Seine-Saint-Denis train museum
Do you know the Rosny-sous-Bois Train Museum? For Heritage Days, the Rosny Rail Museum is opening its doors for free on Saturday, September 19 and Sunday, September 20, 2026, for a journey into the heart of railway history. Ready to climb aboard? [Read more]

Heritage Days 2026: Weekend tours of Beaumont-sur-Oise Castle (95)
Beaumont-sur-Oise Castle unfolds during these Heritage Days. A medieval relic, the castle’s keep dominates the banks of the Oise and offers a splendid view of Saint-Laurent Church, to be explored on 19 and 20 September 2026. Discover the program! [Read more]

Guided tours and performances at the Château de Champs-sur-Marne for the 2026 Heritage Days
As Heritage Days bring to life the Paris region’s greatest treasures, the Château de Champs-sur-Marne unveils a rich program for this weekend of September 19–20, 2026. [Read more]