Hôtel d'Estrées, Private mansion in Saint-Thomas-d'Aquin, Paris, France.

The Hôtel d'Estrées is a private mansion in the Saint-Thomas-d'Aquin district of Paris with symmetrical facades and refined architectural details from the early 1700s. The interior features typical French furnishings of that period with stylish rooms and ornate decoration.

Robert de Cotte, premier architect to Louis XIV, built the hôtel between 1711 and 1713 for Madeleine-Diane de Bautru de Vaubrun, Duchesse d'Estrées. After passing through several owners, it was bought in 1863 by the Imperial Russian government, which installed its embassy there. Alexander II was received at a ball in 1867, and Nicholas II stayed in 1896. Since 1977 it has been the ambassador's residence.

The Russian imperial government bought the house in 1863 for 1.3 million francs and installed its embassy there. The Blue Salon kept the monogram of Alexander III and the double-headed imperial eagle even through the Soviet period. The Red Salon, in Louis XV style with a red granite fireplace, is where official receptions are held.

The building stands at 79 rue de Grenelle and serves as the official residence of the Russian Ambassador to France. Visits are typically available only with prior permission or during special diplomatic occasions.

The grand staircase's tapestry, The Triumph of Alexander of Macedon, was woven in Brussels in the 17th century after a design inspired by Charles Le Brun. The same staircase walls carry bronze plaques listing every Russian ambassador to France since 1701, and the vestibule holds Alexander Bourganov's bust of Emperor Alexander II.