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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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The Summerhouse on the Capitol Grounds surrounded by pink azalea flowers.
A few ideas to help you in planning a visit to Capitol Hill.

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Photo of Capitol Hill steps.
Download a PDF of the full list.

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The AOC partners with the Phelps Architecture, Construction and Engineering High School in northeast Washington, D.C.
As volunteers, the time commitment for AOC employees who mentor is not huge,...

Explore Capitol Hill

  • Featured

    History with a Side of Mystery: the Rotunda Benches

    The benches of the Capitol Rotunda have also called a few other locations home over the years.

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  • Featured

    Crumbling Down and Building Up

    To address this stone pandemic across the Capitol campus takes a team of historic preservationists, structural engineers and stonemasons, among others.

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  • Featured

    How the Crypt Got its Name

    This brightly lit circular room below the Rotunda is one of the most heavily used circulation spaces in the building, its sandstone floor trodden by hundreds every day.

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U.S. Capitol Building