The Heritage Days 2026 are the must-see event of the Île-de-France cultural calendar, happening on September 19 and 20. Each year, these days celebrate the richness of national heritage through free tours, new activities, and exceptional openings across Île-de-France. At Royaumont, this celebration takes on a unique dimension: explore the site from a fresh perspective, engage in immersive experiences, and enjoy reduced rates, all contributing to a weekend that blends emotion, discovery, and accessibility.
TheAbbaye de Royaumont, a Cistercian gem, is steeped in history and architecture: founded between 1228 and 1235 under the aegis of Saint Louis (Louis IX) and his mother Blanche de Castille, it was one of the most important medieval abbeys in France. Listed as a historic monument, it has survived the centuries, from the Revolution - when it was transformed into a workers' spinning mill - to the XXᵉ century, when the Goüin family and then the Royaumont Foundation, created in 1964, turned it into a cultural center dedicated to musical, choreographic and artistic creation.
So, why visit the Abbaye de Royaumont during these exceptional days? Because the experience is simply magical: guided tours opening spaces usually reserved for resident artists, playful activities, large-scale games... A true special weekend to marvel at 800 years of living beauty. It’s the perfect opportunity to uncover the secrets of its galleries, libraries, cellars or cloisters, in an extraordinary atmosphere. As a couple, with friends or with family, it’s a moment of heritage, art and emotion you won’t want to miss.
A never-before-seen tour of Royaumont Abbey
The abbey will exceptionally open the doors to the so-called “Saint Louis” chamber at the end of the usual guided tour. Each library reveals its treasures, and lectures are organized, notably about Debussy.
Participation requirements: Full price: €11 / Reduced rates: from €7 - Booking required | Special rate - https://www.royaumont.com/evenement/visite-guidee/?date=20/09/2026T14:00
Schedule: Saturday, September 19, 2026 – 14:00 ⤏ 15:00, 15:30 ⤏ 16:30 | Sunday, September 20, 2026 – 11:00 ⤏ 12:00, 14:00 ⤏ 15:00, 15:30 ⤏ 16:30
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Dates and Opening Time
From September 19, 2026 to September 20, 2026
Location
Royaumont Abbey
Asnières-sur-Oise
95270 Asnieres sur Oise
Prices
Tarif réduit: €7
Plein tarif: €11
Official website
www.royaumont.com