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

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Work Photography of a Worker repairing the Hart Roof at sunset.
Construction activities for the repair and replacement of the Hart Senate...

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

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Earth Day Celebration at the U.S. Botanic Garden
Join the United States Botanic Garden for an Earth Day Celebration on the...

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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