Every third weekend in September, the Heritage Days open freedoors to emblematic sites or secret spots. For this new edition, organized on September 19 and 20, 2026, the scenic getaway takes place far from ministerial gilding, in the open air. The Francilian rural heritage invites young and old to rediscover the farming roots of our départements, from the Versailles plain to the far reaches of the Brie.
For a long time, the rhythm of the water wheels along the Essonne, the Marne or the Yvette set the tempo of the region, which has preserved remarkable mill installations. You also encounter monumental dîmières granaries, recognizable by their heavy oak frames and nave-like bays worthy of village cathedrals, originally built to stock tax in kind. Less common are former laiteries d'apparat—showy dairies that reveal royal or bourgeois tastes for theatrical pastoral scenes, such as Rambouillet sculpted for Queen Marie-Antoinette. A stubborn legend even claims she would sometimes churn butter in porcelain bowls there, though historians attribute this whim to a mere period-stage piece.
This rural network goes beyond postcard-perfect images. Many of these farmsteads, built of honey-colored meulière rubble or local limestone, are today animated by passionate associations, craftspeople, and farmers keen to valorize traditional know-how: wool work, bread baked in restored wood-fired ovens, and the preservation of local breeds like the Île-de-France sheep. Exploring these buildings helps explain how square farmyards, typical of the Paris Basin, once combined defense, storage, and communal life.
Ready to lace up your boots and meet the millers and farmers of Île-de-France? Read on for the weekend’s open sites and the activities on offer.
Guided tours to the heart of Monsieur's Farm, Louis XVI's brother, for Heritage Days 2026.
For the 2026 Heritage Days, set off to explore Monsieur's Farm in Mandres-les-Roses. Dive into the history of this Val-de-Marne agricultural estate linked to the brother of Louis XVI. [Read more]
This vineyard in the heart of the Yvelines opens its doors for the 2026 Heritage Days.
Ready to raise a glass to heritage? European Heritage Days 2026 offer a weekend that’s as cultural as it is wine-focused, on September 19 and 20. Set your sights on the Yvelines, at Domaine de La Bouche du Roi, for a getaway among rows of vines, historical tales, and sips to savour! [Read more]
This hidden mill in Yvelines unveils itself for the 2026 Heritage Days
Off to Châteaufort to discover Moulin d’Ors, a 19th-century wheat mill and a striking witness to the history of the Chevreuse valley. [Read more]
In Bussy-Saint-Georges, discover a historic watermill for the 2026 Heritage Days.
On September 19 and 20, 2026, the Moulin de Russon will unveil its history, its water wheel and its mechanisms during Heritage Days. Here's the program! [Read more]
In Ivry-sur-Seine, the Moulin de la Tour rewinds the clock for the 2026 Heritage Days.
A rare remnant of Ivry-sur-Seine’s rural past, the Moulin de la Tour will be open for European Heritage Days on 19 and 20 September 2026. A visit to better understand the history of this monument and the transformations of Val-de-Marne. [Read more]
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Dates and Opening Time
From September 19, 2026 to September 20, 2026
