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

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A black and white photograph of the United States Capitol in 1846.
The history of the United States Capitol Building begins in 1793. Since then,...

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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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Painted portrait of Dr. William Thornton
 The Architect of the Capitol (AOC) is the builder and steward of America’s...

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Susan Dworkin photo.
Learn about climate change and staple foods at noon on October 24 at the U.S...
  • An AOC worker mowing the grass on the grounds of the U.S. Capitol
  • Painted portrait of Dr. William Thornton
  • AOC Gardener at the U.S. Botanic Gardener handling some orchids
  • AOC employees working on the maintenance, operation, development, and preservation of the United States Capitol complex.