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

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Supreme Court of the United States
Finished and occupied in 1935, the Supreme Court building is a fitting home...

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A crowd of people visiting the Capitol during visitor hours
Please note: Many of these Capitol Hill buildings are working office buildings...

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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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Beth Burrous, biochemist and USBG volunteer.
Learn about plants used to make lifesaving medicines at the U.S. Botanic Garden...

Doing Business with AOC