iThe Library of Congress is the research library of the United States Congress and, with roughly 173 million items, the largest library in the world. Visitors enter through the Thomas Jefferson Building, an 1897 Beaux-Arts landmark whose Great Hall rises 75 feet from a marble floor to a stained-glass ceiling, decorated by nearly fifty American painters and sculptors. On display are the Library's founding treasures: a perfect vellum Gutenberg Bible, the recreated personal library of Thomas Jefferson, and rotating exhibitions in the David M. Rubenstein Treasures Gallery. Entry is free, but every visitor needs a timed-entry pass.
Library collections trace how Americans have argued with, rallied around and reached for the Declaration of Independence — its ideals of equality, liberty and the pursuit of happiness.

Highlights from the American Folklife Center's 50 years of collecting: recordings, photos and objects on the living traditions of food, play, work and place.

On display in the Great Hall, the Library's perfect vellum Gutenberg Bible marks the beginning of the printed book and the explosion of knowledge set off by movable type.
Music manuscripts and personal effects from the Gershwin collection, including George's piano and desk, Ira's typing table and typewriter, and oil self-portraits by each brother.

A recreation of Jefferson's personal library: the 6,487 volumes he sold to Congress in 1815 to refound the Library, in the Southwest Pavilion of the Jefferson Building.

The Jefferson Building's ceremonial heart, rising 75 feet from a marble floor to stained glass, with Elihu Vedder's Minerva mosaic, a zodiac floor compass and work by nearly fifty American artists.
Thomas Jefferson Building, 10 First Street SE, Washington, DC 20540, United States
Nearest station: Capitol South Metro (Blue/Orange/Silver Line), Union Station Metro (Red Line) and Federal Center SW Metro (Blue/Orange/Silver Line)
Show on mapClosed 26 November
Closed - Thanksgiving Day
| Mon | Closed |
| Tue | 10:00–17:00 |
| Wed | 10:00–17:00 |
| Thu | 10:00–20:00 |
| Fri | 10:00–17:00 |
| SatToday | 10:00–17:00 |
| Sun | Closed |
Free
Free for all visitors. Every visitor, regardless of age, must reserve a free timed-entry pass. Passes are released up to 30 days ahead, with same-day passes online from 9:00 a.m. ET. Individuals can book up to 20 passes; groups of 21 or more use a separate registration form.
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