Smithsonian American Art Museum Landmark located in Washington, D.C.'s downtown cultural district. It is considered an example of Greek Revival architecture in the United States. It was designed by architects Robert Mills, and Thomas U. Walter. During the 1990s, the Smithsonian Institution worked on restoring the building. The Smithsonian completed another renovation of the building in July 1, 2006. The 2000-2006 renovation restored many of the building’s exceptional architectural features: restoring the porticos modeled after the Parthenon in Athens, a curving double staircase, colonnades, vaulted galleries, large windows, and skylights as long as a city block. During the renovation, the Lunder Conservation Center, the
Conservation and restoration at the Smithsonian Institution specimens and cultural artifacts. The ACL provides professional care for collections; reviews prospective acquisitions and loans; prepares collections for exhibit and loan; maintains objects on exhibit in the National Museum of Natural History; reviews sampling requests; advises on object care; and implements preventive conservation projects. Hope diamond, dinosaur fossils, gems, and minerals. A History of Pest Control Measures in the Anthropology Collections, National Museum of Natural History, Smithsonian Institution by Lisa Goldberg At the National Postal Museum, the Preservation Office is responsible for conservation of the Museum collection. World’s largest stamp gallery, full-size Freight-liner semi-truck cab cutaway, vintage mail planes,