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

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The Cannon House Office Building, completed in 1908, is the oldest congressional office building as well as a significant example of the Beaux Arts style of architecture.
The Cannon House Office Building, completed in 1908, is the oldest...

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Screenshot of Google Maps image of United States Capitol and surrounding areas.
Located at the center of Washington, D.C., the U.S. Capitol Building and other...

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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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Photo of US Capitol Building made of plant materials.
The U.S. Botanic Garden’s annual holiday exhibit is on display November 27...

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Blog Posts Categorized 'Projects'

September 29, 2014
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Juan Sandoval and Jose Hernandez using a lewis to remove stones from Olmsted Terrace.
Addressing the stone pandemic across the Capitol campus takes a team of historic preservationists, structural engineers and stonemasons, among others.
October 22, 2013
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View of the U.S. Capitol Dome with light in the windows
Architect of the Capitol Stephen T. Ayers, FAIA, LEED AP, reflects on the AOC's effort to restore the U.S. Capitol Dome.
March 26, 2013
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The scaffold for the Supreme Court's restoration is wrapped in a scrim enclosure printed with a full-size photograph of the building’s façade.
Take a look behind the scrim at the restoration work underway on the U.S. Supreme Court Building's West Front façade to address deterioration due to age, weather and nature. Take a look behind...
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