The Library of Congress was built in 1800 and officially opened in April 1800. It was established on Capitol Hill in Washington. The Library of Congress is an important symbol of American knowledge and democracy, and holds an important place in American culture. According to the most recent count, it contains 75 million works. There are about 18 million volumes in the bound edition alone. It holds nearly 121 million items in various collections, and more than two-thirds of the books are stored in multimedia format. The library covers an area of 35 acres and has a total length of 848 kilometers of bookshelves, including many rare books, special collections, the world's largest maps, film and television films, etc.
Now the museum has a total of 5,440 staff members, including 3,000 professional staff and 800 consultants. The museum is divided into 8 departments, the largest of which is the Congressional Research Service, with 1,000 staff, serving members of Congress and other The staff are busy, with an average of one book or material delivered to the Capitol every 9.5 seconds.