Calling all history buffs and budding explorers: the Heritage Days are back, inviting us to meet on the weekend of September 19–20, 2026 for a 43rd edition that already looks promising. Each year, Paris and the entire Île-de-France participate in this must-see event, offering numerous free visits, unconventional activities, and exceptional openings to both private and public venues. From must-see museums to great institutions and even hidden monuments, the weekend will showcase the finest treasures of our heritage and reveal their secrets to visitors.
It's also an opportunity to conquer the castles of the Île-de-France region , including those in the 92 département. Yes, in Hauts-de-Seine , a number of historic estates are taking part in the Journées du Patrimoine (Heritage Days), unveiling their respective programs for this exciting new edition!
The perfect opportunity to discover these historic treasures of the Paris region. Stay tuned, the selection is updated as we make announcements and discoveries! And for more ideas for Heritage Days 2025 in the Hauts-de-Seine region, click here!
