Hidden behind a long stone wall and an immense park stands the Château du Grand Chesnay. Its neo-classical style hints at its 19th-century origins. Yet this elegant structure holds secrets stretching back centuries.
The Château du Grand Chesnay wasn’t always as you see it today. In the 16th century a different château occupied this very spot. It boasted a drawbridge moats a courtyard and a walled park. Jean d’Escoubleau made Renaissance-style improvements in 1543. The château changed hands many times. One owner was Antoine d’Aquin the King’s chief physician under Louis XIV.
Imagine the opulence. The château was expanded in a classical style complete with magnificent formal gardens then later English-style gardens with water features and a large orangery. Underneath one wing lies a “nymphée” a dining room adorned with seashells and minerals remnants from the earlier château.
A pivotal moment occurred on May 1 1756. The château then owned by Antoine Louis Rouillé Louis XV’s Secretary of State for Foreign Affairs hosted the signing of a treaty. This treaty reversed alliances uniting France and Austria. The treaty was initially known as the Treaty of Jouy later the Treaty of Versailles.
Armand Seguin a supplier to the armies an industrialist and financier acquired the château in 1801. He had it redesigned in the neo-classical style by architect Bienaimé. The gardens were also altered. The château remained in the family until 1953 the park until 1955.
Then the CRC Centre de Recherche et d’études des Chefs d’entreprise purchased the property marking the beginning of its modern history. Today HEC Paris uses the Château du Grand Chesnay for executive education and seminars. The vaulted cellars and the unique nymphée remain testaments to its rich past. The Château du Grand Chesnay is a living record of French history a blend of old and new a testament to time and change. It whispers stories of royalty physicians treaties and transformations. It’s a story waiting to be fully explored.