Smithsonian Institution

The Smithsonian Institution ( smith-SOH-nee-ən; or simply the Smithsonian) is a group of museums, education and research centers, created by the United States federal government "for the increase and diffusion of knowledge". Founded on August 10, 1846, it operates as a trust instrumentality and is not formally a part of any of the three branches of the federal government. The institution is named after its founding donor, British scientist James Smithson. It was originally organized as the United States National Museum, but that name ceased to exist administratively in 1967.

The Smithsonian Institution has historical holdings of over 157 million items, 21 museums, 21 libraries, 14 education and research centers, a zoo, and historical and architectural landmarks, mostly located in Washington, D.C. Additional facilities are located in Maryland, New York, and Virginia. More than 200 institutions and museums in 47 states, Puerto Rico, and Panama are Smithsonian Affiliates. Institution publications include Smithsonian and Air & Space magazines.