Serving Congress and the Supreme Court, preserving America's Capitol, and inspiring memorable experiences

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Summerhouse
The Summerhouse, a hexagon-shaped brick structure set into the sloping...

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Capitol Visitor Center
The Office of Congressional Accessibility Services (OCAS) provides a variety...

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Publications
The Architect of the Capitol annually publishes a wide variety of publications...

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Engraving showing the first dome of the U.S. Capitol, designed by Charles Bulfinch. By William H. Bartlett, circa 1840.
Architect of the Capitol Stephen T. Ayers, FAIA, LEED AP, remembers one of the...

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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