The Smithsonian Institution is the world's largest museum complex, composed of 18 museums, 9 research centers, the National Zoo, the Smithsonian Institution Libraries, and a number of other offices and activities. The Institution houses the United States' national collections in natural history, American history, air and space, fine and decorative arts, and in other fields ranging from postal history to African art.
The Smithsonian Institution is the world's largest museum complex, composed of 18 museums, 9 research centers, the National Zoo, the Smithsonian Institution Libraries, and a number of other offices and activities. The Institution houses the United States' national collections in natural history, American history, air and space, fine and decorative arts, and in other fields ranging from postal history to African art.