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

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An AOC worker mowing the grass on the grounds of the U.S. Capitol
The roles and responsibilities of the Architect of the Capitol cover an...

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Photo of damage to be restored.
The focus of the Rotunda Restoration will be to remove hazardous materials (...

U.S. Capitol Building

The United States Capitol Building is located in Washington, D.C., at the eastern end of the National Mall on a plateau 88 feet above the level of the Potomac River. Learn about the history, art and architecture of the U.S. Capitol Building here, and take an interactive look at the building through the Architect's Virtual Capitol.

For information on touring the U.S. Capitol building visit: www.visitthecapitol.gov.

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