Palais Rose in Vésinet, Limestone villa in Le Vésinet, France.

The Palais Rose is a two-storey limestone villa at 12 rue Diderot in Le Vésinet, built from 1899 in the style of the Grand Trianon at Versailles. Its symmetrical facade has a slightly projecting central bay topped by a low triangular pediment, a row of small square openings beneath the flat roofline, and a tall metal gate in front. A rectangular red-and-white sign stands at the left of the facade.

Arthur Schweitzer, a shipowner and cousin of Dr Albert Schweitzer, bought two adjoining plots overlooking the Lac des Ibis between 1899 and 1900 and had a house built in the style of the Grand Trianon at Versailles. Ruined, he saw it sold at auction on 19 July 1906 to the Parsi businessman Ratanji Tata, who never lived there. The poet Robert de Montesquiou bought it on 29 October 1908 and lived there until his death in 1921. Listed as a monument historique in 1986, it was restored in the 2000s under Emad Khashoggi of Cogemad.

The name Palais Rose was given by Count Robert de Montesquiou, who lived here from 1908 until his death in 1921. He filled the house with paintings, furniture and curios, and built a separate building, the Ermitage, for his library. His guests included Debussy, Colette, Rodin and Sarah Bernhardt.

The villa stands at the corner of 12 rue Diderot and 14 Allée des Fêtes, behind a tall metal gate; the two-storey stone facade, its projecting central bay and low triangular pediment can be seen from the street. A commemorative plaque on the Ermitage, visible from rue Diderot, marks de Gaulle's stay of 12 to 15 May 1940.

General Charles de Gaulle stayed at the Ermitage, the separate building on the grounds, from 12 to 15 May 1940, just after taking command of the 4th Armoured Division. A commemorative plaque set into the building is visible from rue Diderot.