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

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The Hart Senate Office Building is the third office structure designed and built to serve the United States Senate.
The Hart Senate Office Building is the third office structure designed 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 employee assembling a bunch of tiny American flags for a display
Information for Small Businesses interested in doing business with the...

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The East Front of the U.S. Capitol at Dusk
The AOC works to make the Capitol Dome, an enduring symbol of democracy...