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

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Outside view of the Longworth House Office Building with a clear blue sky in the background.
Completed in the spring of 1933, the Longworth House Office Building is the...

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Snapshot of a crowd of people on a guided tour through the Rotunda of the U.S. Capitol
Official Tours of the U.S. Capitol Building are offered Monday through...

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East Front of the U.S. Capitol Building
AOC’s annual Performance and Accountability Report provides the results of the...

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East Front Plaza Repairs
AOC is making repairs to expansion joints on the East Front Plaza of the...

U.S. Botanic Garden

Steeped in history, rich with tradition, the United States Botanic Garden is one of the oldest botanic gardens in North America. It informs visitors about the importance, and often irreplaceable value, of plants to the well-being of humankind and to earth’s fragile ecosystems. The Garden was established on the National Mall in 1820.

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