Heritage Days 2025 at the Val-d'Oise departmental archives: the program

The Journées du Patrimoine return on September 20 and 21, 2025. During this exceptional weekend, which also takes place in several European countries, many establishments open their doors to the general public, often free of charge.

It's an opportunity to discover places that are sometimes inaccessible, or the secrets of monuments you thought you knew well. This national and international event is attended by some fifty countries in Europe and around the world. The event was created on the initiative of Jack Lang, then Minister of Culture, in 1984. This year marks the 42nd European Heritage Days, with the themes of living heritage and sports heritage.

Heritage Days 2025 in Val d'Oise: discover all the treasures of 95
The 2025 edition of the Journées du Patrimoine (Heritage Days) invites us to discover the little-known treasures of the Val d'Oise. From September 20 to 21, 2025, castles, museums and churches open their doors, revealing an exceptionally rich historical and cultural heritage. [Read more]

And like every year, the Val-d'Oise ( 95) departmental archives will be taking part! This institution is responsible for collecting, classifying, preserving and making archives available to the public. With a department as rich as the Val-d'Oise, it's obvious that these walls contain many treasures that it would be a shame not to discover.

• To be read
• The week's best bets in Paris and Île-de-France for June 8–14, 2026

To mark the Journées du patrimoine, the archives départementales are offering a range of activities for young and old alike. Find out what's in store for you this special weekend.

The Journées du Patrimoine 2025 program at the Val-d'Oise departmental archives :

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