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

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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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View of the U.S. Capitol Building from above at dusk
In order to ensure the safety of visitors and staff and to preserve the...

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AOC members holding the Historic Preservation Award that they received
The Architect of the Capitol strives to perform all work at a high level of...

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Detailed view of Piper nigrum plant
Learn how pepper, allspice, cinnamon, cloves and nutmeg became a part of our...

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