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

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United States Capitol - 1846
The history of the United States Capitol Building begins in 1793. Since then,...

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Guided Tours: Buildings on Capitol Hill
Official Tours of the U.S. Capitol Building are offered Monday through...

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AOC Receives Historic Preservation Award
The Architect of the Capitol strives to perform all work at a high level of...

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Military Bands Summer Concert Series 2014
The 2014 series of concerts will be inaugurated by the Navy Band on Monday,...

Projects

The AOC is responsible for the care and maintenance of more than 17 million square feet of buildings and 460 acres of grounds. Many of these structures are more than a century old and their constant upkeep is critical as they are working office buildings of the Congress and the Supreme Court. While some projects are highly visible, such as the restoration of the Capitol Dome; many are unseen, such as modernization of plumbing and electrical systems or refurbishment of offices.

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