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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A view of the Capitol Visitor Center lit up at night
The Office of Congressional Accessibility Services (OCAS) provides a variety...

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Clive Atyeo, Gardener, USBG
Information about working for the Architect of the Capitol:

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The Capitol Crypt, which now houses statuary and exhibitions, was once used as an informal storage space where bicycles were parked, seen here circa 1900.
The term “crypt” has long referred to a space beneath the main floor of a...

Projects

The AOC is responsible for the care and maintenance of more than 17 million square feet of buildings and 553 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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