The castle of Beynes is installed in the bottom of a valley.
Its construction dates back to the 11th century. It first had a military role at a time when the course of the Mauldre constituted a line of defense of the royal domain, to the west, in particular against the English during the Hundred Years' War.
In the 15th century, the castle having lost its strategic importance due to the extension of the royal domain, Robert d'Estouteville, chamberlain of King Charles VII and owner of the premises, made it undergo some modifications, by demolishing the keep and adapting the nascent artillery fortifications.
In the 16th century, in 1536, the estate was ceded to Diane de Poitiers (Madame de Valentinois) by Henri II, her royal lover2. She had a new dwelling built by Philibert Delorme, author of the Château des Tuileries, the Château d'Anet or part of that of Chenonceau. The castle is among the first listed with a framework that was a precursor to the principle of glued laminated timber, the technique of which was therefore invented by this great architect3,4.
In the 17th century, in 1688, ladies of the high aristocracy gathered there around the mystical Madame Guyon. On October 4, they organized a meeting at the château between Madame Guyon and their spiritual director, the Abbé de Fénelon5. This one becomes one of the most fervent disciples of Madame Guyon6.
In the 18th century, the ruins of the castle served for a time as the setting for the English park laid out by the Phélypeaux de Pontchartrain who then owned it. An estimate for its restoration is produced7, its cost probably convinces the owners to leave it as it is. Abandoned then dismantled, it even serves as a quarry for the construction of the village.
In 1967, the Château de Beynes was bought by the municipality, which was responsible for saving the estate, which was then buried by vegetation.
From 1995 to 1999, it was excavated and then benefited from reinforcement works.
In 2014, all the remains were classified as historical monuments 8.
At the beginning of June 2016, heavy rains caused the flooding of the moat9,10, and the collapse of a section of the wall. Work, in the form of a subsidized and sponsored volunteer site, is underway to stop its deterioration and allow its access to the public11.