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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Photo of the East Front of the U.S. Capitol Building looking North to South.
AOC's annual Performance and Accountability Report (PAR) provides the results...

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Ginseng, the Divine Root.
Learn about ginseng from author David A. Taylor on September 26 at noon.
  • An AOC worker mowing the grass on the grounds of the U.S. Capitol
  • Painted portrait of Dr. William Thornton
  • Clive Atyeo, Gardener, USBG
  • AOC employees working on the maintenance, operation, development, and preservation of the United States Capitol complex.