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The Smithsonian Institution is a large group of different museums, scientific building and collections in Washington, D.C., established in 1846 using money left by James Smithson, an English scientist. The Institution holds some 139 million exhibits “for the increase and diffusion of knowledge”. Nine Smithsonian museums are located between the Washington Monument and the Capitol. A three-level underground building that opened in 1987 houses two museums and the S. Dillon Ripley Center, which includes the International Gallery, offices and classrooms. Five other museums and the Zoo are elsewhere in Washington, and both the Cooper-Hewitt National Museum of Design and the new National Museum of the American Indian are in New York City.
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How many Smithsonian museums are located in Washington?