European Heritage Days 2022: guided tour of the remnants of the Château de Beaumont-sur-Oise (95)

Published by Laurent P., Graziella L. · Published on 16 August 2022 at 12h01
The Château de Beaumont-sur-Oise opens for European Heritage Days 2022. Remnants from the Middle-Ages, the dungeon of the castle overlooks the Oise river, and gives splendid views on the Church of Saint-Laurent. Discover all this on September 17 and 18, 2022.

On September 17 and 18, for European Heritage Days 2022, the Château de Beaumont-sur-Oise, a remnant from the Middle-Ages, open for unmissable tours.

But before your visit, here is a quick history recap. The 12th century is a milestone as long as it comes to the evolution of the castle in Val d’Oise. This is when the construction of the main stone dungeon (37-m high) starts. Higher than the bell tower of the Church of Saint Laurent (32 meters), the dungeon used to store food on the ground floor and house the lord on the upper floor. The last Comte of Beaumont dies in 1223, without heir, the castle is then bought by King Louis VIII, becoming then a royal estate.

In 1226, Louis IX – future Saint Louis – stays in the castle and has the Royaumont Abbaye built. In the 14th and 15th centuries, the castle is attacked multiple times, destroyed and rebuilt: the Hundred Years’ War, siege of the English, the French, the Bourguignons, and the Armagnacs. The castle and the city are occupied by the English between 1420 and 1435. In the 18th century, the castle goes under its latest major transformation.

With the birth of artillery, weapons and more and more powerful, and the castle defensive structure needs to be improved. The dungeon will be shortened, moving from 37 meters to about 5 meters. The castle becomes an artillery stronghold. Then, the castle loses grandeur and in 1815, it is left empty. Emile Zola eventually discovers the city and decides to use it as the background for his novel, “The Dream”.

It has it all for you to have a wonderful history-filled day!

Practical information

Dates and Opening Time
On 18 September 2022
From 10 a.m. to 2 p.m.



    Place du Chateau
    95260 Beaumont sur Oise


    Official website

    More informations
    Ouvert de 10h à 14h.