The Andrew Carnegie Mansion is a historic house located at 2 East 91st Street at Fifth Avenue in the Upper East Side of Manhattan. Andrew Carnegie moved into his newly completed mansion in late 1902 and lived there until his death in 1919; his wife, Louise, continued to live there until her death in 1946. The building is now the Cooper-Hewitt, Smithsonian Design Museum, part of the Smithsonian Institution. The surrounding area, part of the larger Upper East Side neighborhood, has come to be called Carnegie Hill. The mansion was named a National Historic Landmark in 1966.
The house is a 3+1⁄2-story structure, finished in brick and stone. It is stylistically an eclectic variation of the Georgian Revival, with stone ashlar corner quoining, windows with heavy stone trim, and a dentillated cornice topped by an urned balustrade. A grassy lawn separates the house from 91st Street, and there is a small garden on its west side. Just east of the mansion proper is a townhouse that was purchased by Carnegie soon after its 1905 construction as a residence for his daughter. This building forms part of the current complex, although its interior has been modernized and converted to office and administrative uses by the Smithsonian.
References:The Château du Lude is one of the many great châteaux of the Loire Valley in France. Le Lude is the most northerly château of the Loire Valley and one of the last important historic castles in France, still inhabited by the same family for the last 260 years. The château is testimony to four centuries of French architecture, as a stronghold transformed into an elegant house during the Renaissance and the 18th century. The monument is located in the valley of Le Loir. Its gardens have evolved throughout the centuries.