Cooper Hewitt, Smithsonian Design Museum is the only museum in the nation devoted exclusively to historic and contemporary design. The museum presents compelling perspectives on the impact of design on daily life through active educational and curatorial programming. It is the mission of Cooper Hewitt's staff and Board of Trustees to advance the public understanding of design across the twenty-four centuries of human creativity represented by the museum's collection. Cooper Hewitt was founded in 1897 by Amy, Eleanor, and Sarah Hewitt—granddaughters of industrialist Peter Cooper—as part of The Cooper Union for the Advancement of Science and Art. A branch of the Smithsonian since 1967, Cooper-Hewitt is housed in the landmark Andrew Carnegie Mansion on Fifth Avenue in New York City. The campus also includes two historic townhouses renovated with state-of-the-art conservation technology and a unique terrace and garden.