Stewards of the iconic buildings and grounds of Capitol Hill since 1793.

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The Madison Building serves both as the Library's third major structure and as this nation's official memorial to President James Madison.
Opened in 1980, measuring 500 feet wide and 400 feet deep, the Madison...

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A view of the Capitol Visitor Center lit up at night
The Office of Congressional Accessibility Services (OCAS) provides a variety...

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East Front of the U.S. Capitol Building
AOC’s annual Performance and Accountability Report provides the results of the...

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Generator Progress May 2014
Work is underway at the northwest corner of the Library of Congress John Adams...