Château de Rosny-sur-Seine

The château was built of bricks and limestone by Maximilien de Béthune, duke of Sully, on the site of an old fortified manor that had been dismantled and burned in 1435.

In 1826, she employed the architect Joseph-Antoine Froelicher to complete the construction of the wings that had been left unfinished by Sully after the death of Henri IV.

[a] When she had lost any hope of returning to France, after her exile, she sold the château and its property in 1836 to an English banker, who yielded in his turn to an anonymous company of businessmen.

The new owner, finding the residence too large for his use, demolished the wings built by the Duchess of Berry, leaving the remainder of the construction its current state.

From the 19th century until 1955, the château and the property belonged to the Lebaudy family, who arranged the commons to lodge their stables, and their kennels, since they practised fox hunting in the surrounding forests.

The château was acquired in December 1984 by a Japanese company, the Nippon Sangyo Kabushiki Kaisha and it underwent various degradations,[3] including a fire in January 1997.

Portrait of the Countess of Sénozan (ca. 1751) by Jean Valade
The château (in 2006) with François Olivier's iron grillwork gate bearing the family arms