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

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Layout of the Capitol Grounds drawn by Landscape Architect Frederick Law Olmsted in 1874.
Landscape Architect Frederick Law Olmsted designed the U.S. Capitol Grounds in...

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The Summerhouse on the Capitol Grounds surrounded by pink azalea flowers.
A few ideas to help you in planning a visit to Capitol Hill.

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Photo of the Capitol dome with an enclosure.
Update: January 2015 Scaffoldin​g and Restoring PhaseThe Dome Restoration...

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Close up view of a Saccharum Officinarum plant
The U.S. Botanic Garden will highlight plants that impart flavor to sweet foods...

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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