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

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Brumidi Corridors
The vaulted, ornately decorated corridors on the first floor of the Senate...

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Capitol Visitor Center
The Office of Congressional Accessibility Services (OCAS) provides a variety...

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The AOC maintains the grounds of the U.S. Capitol
The roles and responsibilities of the Architect of the Capitol cover an...

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Masons work on Olmsted Terrace Steps
AOC is undertaking a project to repair, clean and preserve the Olmsted Terrace...

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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