A not-to-be-missed event, the Journées du Patrimoine (Heritage Days) offer an exceptional dive into the heart of France's heritage. Monuments, hidden stories and cultural encounters await the curious for unforgettable moments of discovery. This year, on the weekend of September 20 and 21, 2025, to be precise, the town ofOsny, in the Val-d'Oise region of France, promises some great visits and events for the occasion.
From its Gallo-Roman origins to the present day, Osny has retained its authentic character while embracing modernism. Its old stone houses, Saint-Pierre-aux-Liens church and the grounds of the Château de Grouchy bear witness to a rich past that blends harmoniously with its present-day dynamism.
Why is Osny a must-see during the Journées du Patrimoine? This pearl of the Val-d'Oise will be revealing its historical secrets through fascinating guided tours. Activities, workshops and exhibitions will captivate visitors of all ages. Osny is a unique experience combining culture, history and conviviality. So, shall we come to Osny, my friends?
Grouchy Castle
Aucun événement annoncé à ce jour, le programme est mis à jour en fonction des annonces officielles.
Église Saint-Pierre aux Liens
Aucun événement annoncé à ce jour, le programme est mis à jour en fonction des annonces officielles.
Grouchy Gallery
Aucun événement annoncé à ce jour, le programme est mis à jour en fonction des annonces officielles.
William Thornley Museum
Aucun événement annoncé à ce jour, le programme est mis à jour en fonction des annonces officielles.
Grouchy Park
Aucun événement annoncé à ce jour, le programme est mis à jour en fonction des annonces officielles.
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Dates and Opening Time
From September 20, 2025 to September 21, 2025
Location
Osny
osny
95520 Osny
Access
Transilien line J Osny station
Prices
Free
Official website
osny.fr
