
The Library of Congress serves as the research arm of the United States Congress and is the de facto national library of the United States. Established in 1800, it is housed primarily in three buildings on Capitol Hill in Washington, D.C.: the Thomas Jefferson Building, the John Adams Building, and the James Madison Memorial Building.
The institution holds a vast collection of more than 173 million items, including books, recordings, photographs, maps, sheet music, and manuscripts. It functions as a major center for scholarly research and preserves a significant portion of the American cultural and intellectual record.
The Library was established by an act of Congress in 1800. During the War of 1812, the original collection was destroyed when British troops burned the Capitol building.
To replace the lost collection, Congress purchased the personal library of Thomas Jefferson, which contained over 6,400 volumes. This acquisition transformed the library from a small legislative reference collection into a comprehensive research institution.
The Thomas Jefferson Building opened in 1897 to house the rapidly growing collection. Throughout the 20th century, the library expanded into the Adams and Madison buildings to accommodate its massive holdings and administrative functions.
The Library of Congress is a cornerstone of American democracy, providing legislators and the public with access to a vast repository of knowledge. It serves as the primary copyright agency for the United States and maintains the National Film Registry and the National Recording Registry, playing a critical role in the preservation of American heritage.
Scholarly debates and areas of uncertainty
Debates often center on the balance between physical preservation of fragile manuscripts and the push for mass digitization. Additionally, the library's role in defining the 'American canon' through its selection processes for national registries is a frequent subject of academic discourse.
Entry Rules
Open to the public for research and tourism. Visitors must obtain a Reader Identification Card for access to reading rooms. Security screening is mandatory for all entrants.
Best Times to Visit
Weekdays during business hours are best for researchers. The Jefferson Building is open for public tours, which are best scheduled in advance.
Photography
Personal photography is permitted in public areas without flash or tripods. Photography is strictly prohibited in reading rooms and restricted areas.
Preservation Notes
Strict climate control is maintained throughout the facilities. Visitors are prohibited from bringing food or drink into the reading rooms and must store personal bags in lockers.