Andrew Carnegie Mansion

The Andrew Carnegie Mansion is located at 2 East 91st Street at Fifth Avenue in Manhattan, New York City, New York. Andrew Carnegie built his mansion in 1903 and lived there until his death in 1919; his wife, Louise, lived there until her death in 1946. The building is now the Cooper-Hewitt, National Design Museum, part of the Smithsonian Institution. The surrounding neighborhood on Manhattan's Upper East Side has come to be called Carnegie Hill. The mansion was named a National Historic Landmark in 1966. The land was purchased in 1898 in secrecy by Carnegie, further north than most mansions, in part to ensure there was enough space for a garden. He asked his architects Babb, Cook & Willard for the "most modest, plainest, and most roomy...