Journées du Patrimoine 2025
September 20
Climb the 13th-century Keep tower and watch live craftsmen at work during this annual open-doors weekend at a meticulously restored medieval fortress.
Blandy
This 13th-century fortress rises from a Seine-et-Marne village like something from a storybook. Climb the Keep's tower, stroll the ramparts, and let the kids loose with discovery booklets designed to turn them into little medieval experts.
Tips
October 17
The Château de Blandy transforms into a living mystery this Halloween. Step into a WWII thriller where you'll navigate between resistance fighters, spies, and desperate soldiers all hunting a war treasure. Can you prevent tragedy before time runs out?
BlandyOpen
This 13th-century fortress rises from a Seine-et-Marne village like something from a storybook. Climb the Keep's tower, stroll the ramparts, and let the kids loose with discovery booklets designed to turn them into little medieval experts.
Tips
October 17
The Château de Blandy transforms into a living mystery this Halloween. Step into a WWII thriller where you'll navigate between resistance fighters, spies, and desperate soldiers all hunting a war treasure. Can you prevent tragedy before time runs out?