Heritage Days 2025: the musée de la batellerie program in Conflans-Sainte-Honorine (78)

The Journées du Patrimoine, created in 1984 by the French Ministry of Culture, have become a not-to-be-missed event for history and culture lovers. Held every year on the third weekend in September, they provide an opportunity to discover places that are usually closed to the public, or to rediscover local heritage from a new angle. In Paris and the Île-de-France region, this event attracts millions of visitors, curious to explore emblematic sites such as the Pantheon, the Palais de l'Élysée, or hidden treasures in the capital's historic, artistic or bohemian districts.

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In 2025, the Journées du Patrimoine program promises to be varied, particularly in the Île-de-France and Yvelines departments. Places not to be missed include the great Parisian monuments, but also unusual sites such as artisan workshops, secret gardens and specialized museums.

The Musée de la Batellerie et des Voies Navigables in Conflans-Sainte-Honorine (78) has a unique history and collection based on the theme of water. Founded in 1965, the museum's mission is to preserve and promote the history of inland navigation in France. Housed in the Château du Prieuré, it boasts a rich collection of objects, models, paintings and documents recounting the evolution of inland waterways and the life of boatmen.

On the program for Heritage Days 2025:

• Museum of inland navigation and waterways
  Saturday, September 20, 2025 - 10:00 ⤏ 19:00 | Sunday, September 21, 2025 - 10:00 ⤏ 19:00
  

  Discover the Museum's collections, which are exceptionally free this weekend.

  
  
  
• Build your own little boat and test it on the water!
  Saturday, September 20, 2025 - 10:00 ⤏ 12:00, 14:00 ⤏ 17:00 | Sunday, September 21, 2025 - 10:00 ⤏ 12:00, 14:00 ⤏ 17:00
  

  At the Museum, children build a small sailboat, decorate it and sail it in a regatta. They take their boat home with them.

  
  
  
• Museum of inland navigation and waterways
  Saturday, September 20, 2025 - 11:00 ⤏ 12:15, 15:00 ⤏ 16:15, 17:00 ⤏ 18:15 | Sunday, September 21, 2025 - 11:00 ⤏ 12:15, 15:00 ⤏ 16:15, 17:00 ⤏ 18:15
  

  The entire team at the Musée de la batellerie et des voies navigables is on hand to welcome you and introduce you to the museum and its surroundings during guided tours.

  
  
  
• Visit the former 11th-century Benedictine priory
  Saturday, September 20, 2025 - 2:00 pm ⤏ 7:00 pm | Sunday, September 21, 2025 - 2:00 pm ⤏ 7:00 pm
  

  At the Museum, Patrice Dupuy will present a 3D model of the church, accompanied by a video. This will also be an opportunity to discover his book, Sainte Honorine, pèlerinage et prieuré de Conflans.