Construction of the central pavilion 1736 (≈ 1736)
Birth of the current main body.
1875-1890
Expansion of the castle
Expansion of the castle 1875-1890 (≈ 1883)
Added pavilions and turrets.
Années 1920
Recomposition of the park
Recomposition of the park Années 1920 (≈ 1920)
Intervention by landscape designer Edward Redont.
années 1920
Recomposition of the park
Recomposition of the park années 1920 (≈ 1920)
Work of Edward Redont.
9 avril 2024
Registration for Historic Monuments
Registration for Historic Monuments 9 avril 2024 (≈ 2024)
Protection of the entire domain.
avril 2024
Registration for Historic Monuments
Registration for Historic Monuments avril 2024 (≈ 2024)
Protection of the entire domain.
Aujourd'hui
Aujourd'hui
Aujourd'hui Aujourd'hui (≈ 2025)
Position de référence.
Heritage classified
The following parts of the Château du Montois: castle, facades and roofs, vestibule, large staircase (cad. A 1204), cellars under the castle (cad. A 1204), terrace with guardrail and retaining wall, entrance gate (cad. A 1204), remains of the outbuildings closing the courtyard to the south (cad. A 1204), hydraulic layout with fountain, degrees and basin (cad. A 1204), park and remains of walls (cad. A 776 to 779, 1177, 1178, 1181, 1182 and 1204), chapel in full (see A 1204), shown in cadastre section A, plots 776 to 779, 1177, 1178, 1181, 1182 and 1204, as delimited on the plan annexed to the decree: inscription by order of 9 April 2024
Key figures
Émile Gaillard - Local historian
Author of the monograph (1905).
Édouard Redont - Landscape
Recomposes the park in the 1920s.
Edouard Redont - Landscape
Recomposes the park in the 1920s.
Origin and history
The Château du Montois is a building located in Ressons-le-Long, in the department of Aisne, in the heart of the natural region of Soissonnais and the former Duchy of Valois. Built in 1736 as a pavilion, it is now the central body of the present castle. Its architecture reflects local influences, with subsequent additions such as two side pavilions (1875-1890) to the redent gables typical of the Soissonnais, and two octagonal turrets inspired by 16th century manor houses.
The estate, including the castle, its outbuildings, its hydraulic development (fontaine, basins), its park and its chapel, was added to the Additional Inventory of Historic Monuments in April 2024. This site is also known for its leisure garden, recomposed in the 1920s by landscaper Edward Redont, author of notable parks such as the Patte-d'Oie or the Reims horticulture garden.
The history of the castle and its owners is documented in a monograph by Émile Gaillard (1905, reissued in 2007), which offers details about the local heritage, including other buildings such as the Mainville Castle or the Pontarcher Paper Mill. The village of Restons-le-Long, where the estate is located, is considered one of the most remarkable of the Aisne by the CAUE (Council of Architecture, Urbanism and Environment).
The entrance gate, the vestiges of the outbuildings, the hydraulic development, the park and the chapel have been among the protected elements since the decree of 9 April 2024. This classification underlines the heritage importance of the site, both for its architecture and for its landscape integration, marked by hydraulic installations and gardens classified in the pre-inventory of remarkable gardens.
The Château du Montois thus illustrates the architectural and landscape evolution of a noble estate, from its creation in the 18th century to its beautifications of the 19th and 20th centuries. Its recent inscription in the Historical Monuments makes it a protected testimony of local history and the art of gardens in Picardia (now Hauts-de-France).
Finally, the estate is part of a territory rich in heritage, as evidenced by the other monuments mentioned in the monograph by Émile Gaillard, such as the Royal Abbey of Notre-Dame de Soissons or the Poulandon mansion. These elements highlight the historical and cultural role of Let's Let's Talk in the region.
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