For this new edition of the Heritage Days 2026, which spotlights the theme of endangered heritage and the heritage of photography, there are plenty of good tips. From Versailles to Dampierre, iconic and little-known venues will open their doors on Saturday, September 19 and Sunday, September 20, 2026.
This Île-de-France department is home to some of France's most famous monuments, including the must-see residence of the Sun King, the château de Versailles (link for details). But this palace isn’t the only treasure to discover in the Yvelines: the region also offers several other castles and estates, quirky museums museums, performance venues, enchanting gardens, and family-friendly sites... So it’s virtually impossible to get bored in the Yvelines during these Journées du Patrimoine!
This year we celebrate the 43rd edition of the Heritage Days. Haven’t you heard of this event staged in more than 50 European countries? The Heritage Days are exceptional open-house events that let us explore for free the region’s museums, castles, theaters and venues for the performing arts, as well as historic institutions, notable companies and nearby religious monuments. It’s a cultural fixture that takes place on the third weekend of September, always delivering a few pleasant surprises!
On the program, we find then guided tours, workshops and other activities that whisk us into the enchanting universe of this expansive Île-de-France department, to meet the gems of our globally unique heritage.
This unusual monastery hidden in the heart of a forest invites you to the 2026 Heritage Days.
The Holy Spirit Skete, an Orthodox monastery tucked in the heart of the Mesnil-Saint-Denis forest, will open to the public during Heritage Days 2026 on September 19. A rare opportunity not to be missed to admire its frescoes and distinctive architecture. [Read more]
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]
Heritage Days 2026: Explore the Grand Cellar of the Priory of Conflans-Sainte-Honorine
Every autumn in Île-de-France, the Heritage Days fling open doors usually shut to the public: on September 19–20, 2026, dive into the region’s medieval history by stepping through the Grand Cellar of the Priory in Conflans-Sainte-Honorine. [Read more]
Heritage Days 2026 in Chatou: uncover the secrets behind its giant river dam
Craving an offbeat outing for Heritage Days 2026? Head to Chatou in Yvelines to tour the inner workings of one of Île-de-France's most strategic dams. [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]
Journées du Patrimoine 2026: exceptional opening of PSG campus in Poissy (78)
On the occasion of Heritage Days, Paris Saint-Germain will open its Poissy campus to the public for the first time on 19 and 20 September 2026. This year, tours are limited to residents of nearby towns. [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]
Heritage Days 2026 at France Miniature (Yvelines): step behind the scenes at the park.
Heritage Days come to France Miniature in Elancourt (78) on 19 and 20 September 2026. For an exceptional weekend, set off on a XXS tour of France among the country’s iconic monuments. [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]
For Heritage Days 2026, discover the Domaine de Dampierre
For Heritage Days 2026, the Domaine de Dampierre-en-Yvelines (78) invites you to discover its program. On September 19 and 20, it will put its remarkable heritage in the spotlight. [Read more]
Heritage Days 2026 at the Town Hall of Saint-Germain-en-Laye (78): the program
Want to play explorers without leaving your own department? Set your sights on the European Heritage Days, September 19–20, 2026, for a free foray into the heart of France’s hidden treasures. Among the places to discover this year, the Hôtel de Ville of Saint-Germain-en-Laye is a historic gem tucked in the very heart of the majestic royal city of 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]
Heritage Days 2026: explore the Agutte-Sembat House, the home of Marcel Sembat and Georgette Agutte.
As part of Heritage Days 2026, discover the Agutte-Sembat House in Bonnières-sur-Seine (Yvelines). Explore the fascinating world of deputy Marcel Sembat and painter Georgette Agutte on this special visit to the Île-de-France region. [Read more]
Heritage Days 2026 at the Berthe Morisot House: discover the Impressionist artist
The Berthe Morisot House in Bougival opens its doors to curious visitors on 19 and 20 September 2026, for the new edition of Heritage Days. [Read more]
Heritage Days 2026: Explore the Ferme d'Ithe and its enigmatic Gallo-Roman remains in Yvelines (78)
Tread in the footsteps of the Gallo-Romans on September 19 and 20, 2026, with a guided tour of Ferme d'Ithe, a well-preserved historic site in the heart of the Île-de-France countryside. [Read more]
Heritage Days 2026: explore the King's Small Stable and its Sculpture Gallery
Housed in the King’s Little Stable at Versailles, the Gallery of Sculptures and Casts sits hidden away. This little-known, unusual museum awaits you on September 19, 2026, for Heritage Days. [Read more]
Heritage Days 2026: The Château de Jambville opens its doors to the scouts’ hideout
The National Headquarters of the Scouts and Guides of France, Château de Jambville welcomes you on September 19–20, 2026, where classic architecture meets a nature-based educational project. [Read more]
The ruins of Port-Royal des Champs, the refuge of Pascal and Racine, worth a visit for the 2026 Heritage Days.
Relive the Grand Siècle in Magny-les-Hameaux on September 19 and 20, 2026. Discover the remnants of Port-Royal des Champs, a site of memory for Pascal and Racine. [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]
European Heritage Days 2026 at the Château de Saint-Germain-en-Laye – National Archaeology Museum (78), program
The Château de Saint-Germain-en-Laye is taking part in the 2026 Heritage Days. On the program for Saturday, September 19 and Sunday, September 20, guided tours of the château and the National Archaeology Museum, and many other activities to boot. [Read more]
Heritage Days 2026: a vanished estate still leaves its mark in Châteaufort
In Châteaufort, the Domaine d’Ors preserves the traces of a former estate now ringed by protected natural spaces. A story to rediscover in the heart of the Chevreuse Valley on Saturday, September 19, 2026. [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 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]
Heritage Days 2026: what’s on at the Château de Rambouillet (78)
In September, Heritage Days make their grand comeback: discover the program planned at Château de Rambouillet (78) for September 19 and 20, 2026. [Read more]
Escape game and a tour of the Château de Plaisir for the 2026 Heritage Days
What if, for the 2026 Heritage Days, we set off to conquer the castles of Île-de-France? In Yvelines, the Château de Plaisir is joining the celebration! Discover the schedule for this weekend, September 19–20, 2026. [Read more]
At the Château de la Verrière, special tours for Heritage Days 2026
On Heritage Days 2026, the Château de La Verrière in the Yvelines region shines a light on a heritage forged since the 16th century, blending a noble residence, historic gardens and striking interior decor. [Read more]
Heritage Days 2026 at the Toy Museum in Yvelines (78) will feature fun, family-friendly tours.
Rediscover your childhood on September 19 and 20, 2026, with the family program crafted by the Toy Museum for the 42nd edition of Heritage Days. [Read more]
In Jouy-en-Josas, the Léon Blum House opens its doors during Heritage Days 2026.
Discover the Léon Blum House in Jouy-en-Josas during Heritage Days 2026, September 19–20, with free tours and cultural activities. [Read more]
For the 2026 Heritage Days in Versailles (78), guided tours of the Montansier Theatre.
For the 43rd edition of Heritage Days, the Montansier Theatre, an 18th‑century treasure located in Versailles, invites you to guided tours on the weekend of September 19 and 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]
This picturesque manorial estate is open to visitors for Heritage Days 2026 in the Paris region.
In Bazemont, in the Yvelines, a former Renaissance château and its outbuildings are open to the public for the 2026 Heritage Days. [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]
Discover Joséphine Baker’s villa during Heritage Days 2026!
European Heritage Days mark their 43rd edition this year, and for music-hall fans it's the perfect moment! You’ll be able to step through the doors of the villa of an iconic figure: Joséphine Baker! See you on the weekend of September 19 and 20, 2026. [Read more]
Aircraft exhibition and flight simulator at Chavenay airfield for Heritage Days 2026
Nestled in the heart of the Versailles Plain, the Chavenay-Villepreux Aerodrome opens its doors for Heritage Days 2026. Come experience an exciting immersion into the world of aviation through an exhibition of legendary aircraft and flight simulators! [Read more]
Heritage Days 2025: Visit the Ballonnière Museum and the jamboree in Moisson (78)
Discover the offbeat Ballonnière Museum and the 1947 jamboree in the town of Moisson, in Yvelines, during the upcoming edition of Heritage Days, slated for the weekend of September 19–20, 2026; here’s the program! [Read more]
Heritage Days 2026: Classic car exhibition at the Château de Maisons-Laffitte (78)
On the occasion of Heritage Days, come discover the magnificent Château de Maisons-Laffitte, built for King Louis XIV, on Saturday, September 19 and Sunday, September 20, 2026, in Yvelines! A wonderful chance to explore this treasure of Île-de-France’s local heritage! [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]
Heritage Days 2026 at the Palace of the King of Rome: exhibition and tours in Rambouillet (78)
In Rambouillet, a wealth of cultural outings awaits us for Heritage Days. The Palace of the King of Rome and its garden will open their doors free of charge this weekend of September 19–20, 2026. [Read more]
Heritage Days 2026: guided tour of the Elsa Triolet–Aragon House in Yvelines
In the heart of the Yvelines, the Elsa Triolet–Aragon house stands as a testament to the love shared by the two writers, and you’ll be able to visit it free of charge on September 19 and 20, 2026, for Heritage Days. [Read more]
Heritage Days 2026 at Parc aux Étoiles (78), the space program
Craving a weekend that takes you to infinity and beyond? On September 19 and 20, 2026, the European Heritage Days fling open their doors to museums, institutions and unexpected venues. Among them, Parc aux Étoiles in Triel-sur-Seine (78) invites you to explore a captivating cosmic realm for free. [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]
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]
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]
Heritage Days 2026: Discover Versailles’s Grand Stables this weekend.
The Versailles Equestrian Academy and the Versailles Campuses open the doors of the Grande Écurie at the Palace of Versailles for Heritage Days this weekend—Saturday, September 19, and Sunday, September 20, 2026. Click here to discover the programme! [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: In the footsteps of one of the EU's architects
Heritage Days are back in Paris and the Île-de-France region for the weekend of September 19-20: in Bazoches-sur-Guyonne, in the Yvelines, it's a chance to visit the Jean Monnet House, where one of the European Union's founders lived. [Read more]
European Heritage Days 2026 at the Château de Monte-Cristo: Weekend program
Looking to dive into the world of Alexandre Dumas? The Château de Monte-Cristo opens its doors for Heritage Days on September 19 and 20, 2026, with wallet-friendly admission. [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]
Scavenger hunt and creative workshop: the Heritage Directorate of the CNC's program for European Heritage Days
On the occasion of Heritage Days, the weekend of September 19–20, 2026, the Cinematic Heritage Directorate of the CNC invites you to discover its work in preserving film heritage. [Read more]
These floating huts in Yvelines are opening to the public on an exceptional basis for the 2026 Heritage Days.
For Heritage Days 2026, the Chalets de la Galiotte invite visitors to discover an astonishing floating village in the heart of the Yvelines for the weekend of September 19 and 20, 2026. [Read more]
Heritage Days 2026: a special tour and beekeeping at the Château de la Celle-Saint-Cloud (78)
On 19 and 20 September 2026, take in an exceptional chance to explore the magnificent gardens of the Château de la Celle-Saint-Cloud in the Yvelines—a property owned by the Ministry of Foreign Affairs that hosts heads of state. This year, we’ll tour the estate and meet beekeepers through an exhibition in the Orangery. [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 in Rambouillet (78): Historic Monuments to Explore
On the occasion of the new edition of the Heritage Days, the town of Rambouillet in Yvelines invites you to a weekend of discoveries and guided tours at the heart of its Historic Monuments, on September 19–20, 2026. [Read more]
Discover this picturesque town and its treasures for Heritage Days 2026 in the Paris region.
There’s plenty to do in Conflans-Sainte-Honorine for Heritage Days 2026! Browse the schedule of tours and activities that will shape the weekend of September 19–20, 2026, in this charming town in the Yvelines. [Read more]
Heritage Days 2026 in Versailles (78): the full lineup of weekend activities
The European Heritage Days are back this weekend, September 19–20, 2026, offering a chance to discover the riches of our heritage. We’re heading to Versailles in Yvelines to check out the edition’s best picks. [Read more]
Heritage Days 2026 in Saint-Germain-en-Laye (78): the royal city’s program.
Heritage Days are back on 19 and 20 September 2026 in Paris and Île-de-France, bringing you fresh cultural discoveries. In Yvelines, Saint-Germain-en-Laye stays true to tradition and presents a 'royal' program to explore during this exceptional weekend. On your calendars: mark these dates! [Read more]
Heritage Days 2026 in Houilles (78): discover the city’s treasures this weekend
The Journées du Patrimoine are back this weekend, September 19–20, 2026! And to break away from the beaten path, head to Houilles in the Yvelines, to dive into the heart of the town’s history. From Saint-Nicolas Church to the charm of the old stone quarries, discover the heritage treasures of this Yvelines town. [Read more]
Heritage Days 2026 in Saint-Rémy-lès-Chevreuse (78): the program
In the heart of the Chevreuse Valley, an exciting town invites you to uncover its secrets and the illustrious figures who have walked its lands. For Heritage Days 2026, what if we wandered Saint-Rémy-les-Chevreuse? Here’s what to expect in this new edition! [Read more]
Heritage Days 2026 in Mantes-la-Jolie (78): the city’s program
Set off on a historic odyssey in Mantes-la-Jolie during Heritage Days! On 19 and 20 September 2026, explore a rich heritage and let yourself be carried away by the stories of days gone by from this gem of the Yvelines. [Read more]
A packed lineup of tours and smart tips on the agenda for Heritage Days 2026 in Le Vésinet.
During Heritage Days on 19 and 20 September 2026, stop by Le Vésinet, a genuine green oasis in the Île-de-France region. Begin planning your route now by checking the tours program, right in the heart of this charming town in Yvelines. [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]
Discover Chevreuse through its most iconic monuments for Heritage Days 2026.
Join us on September 19 and 20 to visit Chevreuse's finest monuments in the Yvelines, for Heritage Days 2026. [Read more]
Heritage Days 2026: Castle tour and historical reenactment in Beynes (78)
In the heart of the Yvelines, a charming town hides a handful of medieval gems you won’t want to miss during the 2026 Heritage Days. A splendid historical program awaits you in Beynes! [Read more]
Heritage Days 2026 at the Yvelines’ castles: must-see sites in the 78
What if we combine Heritage Days 2026 with a quest to discover the castles of Île-de-France? This weekend, head to the Yvelines to explore the sublime residences that will be opening their doors for the September 19–20, 2026 weekend. [Read more]
The Yvelines region is teeming with sights, monuments and activities you won’t want to miss. So take advantage of this beautiful weekend to discover them all, with family or with friends!
Dates and Opening Time
From September 19, 2026 to September 20, 2026
Recommended age
For all
