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
National Museum of the American Indian in New York City; and the Cultural Resources Center, a research and collections facility in Suitland, Maryland. The foundations for the present collections were first assembled in the former Museum of the American Indian in New York City, which was established in 1916, and which became part of the Smithsonian in 1990. Following controversy over the discovery by Native American leaders that the Smithsonian Institution held more than 12,000–18,000 Indian remains, mostly in storage, United States Senator Daniel Inouye introduced in 1989 the National Museum of the American Indian Act. Passed as Public Law 101-185, it established the National Museum