Did you know? In Île-de-France, there are more than 250 castles. And for the Heritage Days, some of them throw open their doors to immerse you in the heart of their stories through often free tours, sometimes extraordinary openings and with special activities. The Yvelines are no exception. While the best known remains the Château de Versailles, the department 78 is brimming with treasures worth discovering. So why not take advantage of the 43rd edition of the Heritage Days to plan a route visiting the castles of the Yvelines?
Here’s a curated selection of the programs waiting for you this weekend of September 19–20, 2026 at the heart of the castles of the 78. All that remains is to plan your itinerary before heading to explore these architectural masterpieces and historic relics that deserve to be more widely known.
Follow the guide and stay tuned: the page is updated as announcements come in and as we uncover new discoveries. Be sure to check the article regularly to discover more ideas for cultural outings in the castles during the Heritage Days 2026 in the Yvelines. And for more gems in Île-de-France, head here!
Heritage Days 2026: the program at Domaine de Dampierre and its château in Yvelines
For Heritage Days 2026, the Domaine de Dampierre-en-Yvelines (78) welcomes us for self-guided visits. On September 19 and 20, the estate puts its exceptional heritage in the spotlight! [Read more]
Heritage Days 2026 at the Château de Saint-Germain-en-Laye - National Archaeology Museum (78)
The Château de Saint-Germain-en-Laye is taking part in the 2026 Heritage Days. On the schedule for Saturday the 19th and Sunday the 20th of September are guided tours of the château and the National Archaeology Museum, along with many other surprises, offering a unique immersion into the heart of History. [Read more]
Heritage Days 2026: explore the Ors Estate Nature Reserve and its ruins.
In Châteaufort, in the Yvelines, Domaine d’Ors blends historic heritage with preserved nature along the Mérantaise. The 2026 Heritage Days offer a chance to discover the estate’s history and the remains of a property shaped by centuries of transformation. [Read more]
Heritage Days 2026: Exploring the Château de Rambouillet (78)
In September, Heritage Days are back: discover the program lined up at the Château de Rambouillet (78) on September 19 and 20, 2026. [Read more]
Escape game and tour of the Château de Plaisir for the 2026 Heritage Days in the Yvelines
And what if, for Heritage Days 2026, we set out to discover the castles of Île-de-France? In Yvelines, Château de Plaisir enters the fray! Discover the program scheduled for this weekend, September 19–20, 2026. [Read more]
At the Château de la Verrière, exceptional tours for Heritage Days 2026
On the occasion of Heritage Days 2026, the Château de La Verrière in Yvelines reveals a heritage shaped since the 16th century, blending a lordly residence, historic gardens and astonishing interior décor. [Read more]
Explore Bazemont's lordly fief during Heritage Days 2026 in the Paris region.
Once a lordly estate, now a town hall, Bazemont Castle opens its doors on September 19 and 20, 2026 for Heritage Days. [Read more]
Heritage Days 2026: guided tour and vintage cars at Château de Maisons-Laffitte (78)
On the occasion of the 2026 Heritage Days, come and discover the magnificent Château de Maisons-Laffitte, built for King Louis XIV, on Saturday, 19 and Sunday, 20 September 2026, in Yvelines. A wonderful opportunity to explore this gem of Île-de-France heritage! [Read more]
Heritage Days 2026 at Château de Breteuil (Yvelines, 78), at the heart of Perrault’s fairy tales
Le Château de Breteuil, the place that draws us into the heart of Perrault's tales, will take part in Heritage Days on the weekend of September 19–20, 2026. Here’s the programme, but note: admission remains payable! [Read more]
Heritage Days 2026: Immerse yourself in Dumas's universe at the Château de Monte-Cristo (78)
The Château de Monte-Cristo, Alexandre Dumas’s home, will take part in the European Heritage Days on 19 and 20 September 2026. To mark the occasion, admission to the château will be discounted. [Read more]
A remarkable visit to the Château de la Celle-Saint-Cloud for Heritage Days 2026
In the heart of the Yvelines, the Château de la Celle-Saint-Cloud, owned by the Ministry of Europe and Foreign Affairs, is exceptionally opening its doors for Heritage Days 2026 on the weekend of September 19–20: here’s the programme! [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]
Dates and Opening Time
From September 19, 2026 to September 20, 2026
Prices
Free
