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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Photo of Dome damage and scaffolding.
As scaffolding installation is completed on the Capitol Dome, the restoration...

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Susan Dworkin photo.
Learn about climate change and staple foods at noon on October 24 at the U.S...

House Office Buildings

The first congressional office buildings were constructed immediately after the turn of the century to relieve overcrowding in the Capitol. Previously, members who wanted office space had to rent quarters or borrow space in committee rooms. The Cannon House Office Building, completed in 1908, is the oldest congressional office building, with the Longworth, Rayburn and Ford House Office Buildings being added later to house the growing Congress.

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