Hôtel de Saint-Aignan
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The Hôtel de Saint-Aignan, originally the Hôtel d'Avaux, is a 17th-century hôtel particulier, located at 71 Rue de Temple, in the 3rd arrondissement and the Marais district of Paris. It was constructed 1644–1650 to the designs of the architect Pierre Le Muet for Cardinal Mazarin's Superintendent of Finances, Claude de Mesmes, Comte d'Avaux, and later purchased by Paul de Beauvilliers, Duc de Saint-Aignan, who added the grand staircase. It is now the home of the Musée d'Art et d'Histoire du Judaïsme.[1][2][3][4]