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U.S. Capitol Dome was constructed with 8,909,200 pounds of ironwork bolted together in a masterpiece of American will and ingenuity.
The U.S. Capitol’s dome made of cast iron was designed by Thomas U. Walter and...

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A virtual Map of Capitol Hill from above
A map of the U.S. Capitol and other buildings and grounds cared for by the...

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Painted Portrait of Benjamin Henry Latrobe
Benjamin Henry Latrobe was hired by President Jefferson in 1803 to fill the...

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L'Enfant’s vision for the City of Washington.
From the Advisory Council on Historic Preservation to the Zoning Commission —...

Explore Capitol Hill

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    Beyond the Dome – Fort Meade

    The items stored in the warehouses are as varied as the AOC jurisdictions to which they belong.

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    Rising High – AOC's Elevator Mechanics

    The elevators at the Library of Congress could be a museum exhibit of their own.

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    Inspired by the Past, Preserving for the Future

    Meet the AOC's decorative painters at the LOC who work to preserve the ornate designs of one of the world's most beautiful buildings.

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    The National Audio-Visual Conservation Center

    The 140,000 reels of film is housed in collections, conservation and nitrate vaults.

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Library of Congress