Library of Congress

101 Independence Ave SE
Washington, D.C. 20540

The Library of Congress is a research library in Washington, D.C., that serves as the library of the U.S. Congress and the de facto national library of the United States.

Founded in 1800, the library is the United States’s oldest federal cultural institution. The library is housed in three elaborate buildings on Capitol Hill. It also maintains a conservation center in Culpeper, Virginia. The library’s functions are overseen by the Librarian of Congress, and its buildings are maintained by the Architect of the Capitol.

The Library of Congress is one of the two largest libraries in the world, along with the British Library. Its collections contain approximately 173 million items, and it has more than 3,000 employees. Its “collections are universal, not limited by subject, format, or national boundary, and include research materials from all parts of the world and in more than 470 languages.”