Cooper Hewitt, Smithsonian Design Museum (Andrew Carnegie Mansion)

The Cooper Hewitt occupies the Andrew Carnegie Mansion at 2 East 91st Street, a Gilded Age residence built for industrialist Andrew Carnegie that later became a public museum. The mansion's domestic architecture and interiors provide a preserved example of early-20th-century domestic design while housing collections of historic and contemporary design objects. The site is designated for its architectural significance and its adaptive reuse as the Smithsonian's design museum.