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 module, Hubble Space Telescope test vehicle, pace Shuttle "Discovery", B-29 Super-fortress "Enola Gay", Concorde, Lockheed Martin SR-71 Blackbird, and Boeing Stratoliner. History, Care, and Handling of America's Spacesuits: Problems in Modern Materials by Mary T. Baker & Ed McManus At the Smithsonian American Art Museum, the Lunder Conservation Center, serves as the conservation center for three Smithsonian units; the American Art Museum, the National Portrait Gallery, and the Renwick Gallery. Lunder is the first art conservation facility to allow the public permanent behind-the-scenes views of the preservation work of museums. The Center features floor-to-ceiling glass walls that allow the public