The Château de Groussay is located in the town of Montfort-l'Amaury, in the Department of Yvelines, west of Paris, in France.
The Château was purchased in 1938-39 by the Spanish aesthete Carlos de Beistegui, who enlarged it, with the professional help of Emilio Terry.
Channon (who was noted for the lavish elegance of his own town and country houses) described the Château as being plain and old fashioned.
With the aim of 19th century restoration Beistegui had replaced modern bathrooms with Victorian style ones, hung bedrooms with Balmoral tartans and installed stag heads.
[2] The château and park of Groussay appeared in Marc Allégret's last film Le Bal du comte d'Orgel (1970).