Heritage Days 2025: medieval festival at Château de la Madeleine (78)

For two days, the people of Ile-de-France will be able to discover the region's most beautiful sites, thanks to a new edition of the Journées du Patrimoine (Heritage Days). On the weekend of September 20 and 21, 2025, head for the historic monuments you've always wanted to visit while they're exceptionally open, the most beautiful churches and castles scattered across the departments of Ile-de-France. Numerous events are organized free of charge, particularly in the Yvelines department.

Have you heard of the Château de la Madeleine in the heights of the Vallée de Chevreuse? This magnificently preserved fortified castle, built between the 11th and 14th centuries, is a fortress located in Chevreuse. Its construction was ordered by Gui I (lord of the Montlhéry-Rochefort branch), to defend the valley from numerous enemy attacks. A true model of its kind: moat, keep, machicolations, drawbridge, chapel, towers and ramparts... it has all the attributes for a medieval immersion!

• To be read
• This week's top picks in Paris and Île-de-France, May 11–17, 2026

Since the 11th century, this château has witnessed all the major events inFrench history. A long epic to discover during the Heritage Days.

Journées du Patrimoine 2025: a must-see program of visits in Yvelines (78)
There's plenty to do for the Journées du Patrimoine 2025 in the Yvelines! On Saturday September 20 and Sunday September 21, 2025, we're off to the many castles and museums of the 78 region to open their doors to you for guided tours, workshops and family fun. [Read more]

The Journées du Patrimoine 2025 program at Château de la Madeleine

Aucun événement annoncé à ce jour, le programme est mis à jour en fonction des annonces officielles.

Happy Heritage Days in Yvelines!