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

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U.S. Capitol Dome was constructed with 8,909,200 pounds of ironwork bolted together in a masterpiece of American will and ingenuity.
The U.S. Capitol’s dome made of cast iron was designed by Thomas U. Walter and...

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Screenshot of Google Maps image of United States Capitol and surrounding areas.
Located at the center of Washington, D.C., the U.S. Capitol Building and other...

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Photo of House Pediment Damage
Fiscal Year 2015 Appropriations

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Bartholdi's Fountain
Take a walking tour of the U.S. Botanic Garden October 1 at 2 p.m., weather...

What's New

Projects

Capitol Dome Restoration
Status: Ongoing Building: United States Capitol

The Dome of the U.S. Capitol Building, one of America’s great symbols of freedom, needs additional restoration as part of an on-going multi-phased program.

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Brumidi Conservation Work
Status: Ongoing Building: United States Capitol

The U.S. Capitol's Brumidi Corridors are undergoing an extensive restoration as part of the Brumidi Corridors Restoration Project.

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Plaster repairs underway at the U.S. Capitol
Status: Ongoing Building: United States Capitol

The AOC has identified areas throughout the Capitol that contain historic paint colors or decoration that need restoration. In many of these areas the plaster has cracked under the stress and weight of multiple paint layers, a result of decades of repainting wall and ceiling surfaces. These areas have been marked for paint analysis; a process that allows the AOC to record what finishes were used in the past before repairing the wall. This allows the area to be restored to its original appearance. Once an area has been documented, the walls must be stripped down to a stable surface that... More »

West Front Staging Area
Status: Ongoing Building: Capitol Grounds

In support of the Dome Restoration Project trucks deliver equipment and supplies to the East and West Fronts of the U.S. Capitol between 6 a.m. and 3 p.m. Flagmen direct pedestrians to use the sidewalk during the delivery process for safety. Additionally, a staging area has been established on the northwest lawn of the U.S. Capitol for the duration of the project.... More »

Work Photography of a Worker repairing the Hart Roof at sunset.
Status: Ongoing Building: Senate Office Buildings

Construction activities for the repair and replacement of the Hart Senate Office Building’s roof and skylights are underway. In support of this effort, a portion of the sidewalk along C street, between the Hart and Dirksen Senate Office Buildings, will be closed through the summer of 2015. The sidewalk closure is required for a material hoist on the side of the building that will facilitate delivery of construction materials to the roof. Signage will be posted to assist pedestrian traffic affected by the sidewalk closure. The AOC has installed hanging scaffolding throughout the Hart... More »

Masons work on Olmsted Terrace Steps
Status: Ongoing Building: United States Capitol

AOC is undertaking a multi-year project to repair, clean and preserve the Olmsted Terrace masonry walls around the Capitol Building. The current phase project includes the dismantling, repair, reinstallation and comprehensive restoration of the Capitol's north approach walls (near the Senate doors), pedestal, steps and curb. Due to safety considerations, the sidewalk and steps located on the north approach to the Capitol Building will be closed until September 30, 2014. Barricades and signage will also be placed at various... More »

Capitol Power Plant
Status: Planned Building: Capitol Power Plant
The Architect of the Capitol (AOC) completed a Long Term Strategic Energy Plan for the Capitol Power Plant (CPP), which identified cogeneration as the preferred solution for achieving energy savings, reducing environmental impacts, and maintaining a reliable source of chilled water and steam for Congress and the Supreme Court. The Cogeneration Plant at the CPP will use natural gas in a combustion turbine in order to efficiently generate both electricity and heat for steam. More »
Cannon House Office Building
Status: Planned Building: House Office Buildings

Due to its advanced age, the House of Representatives is in the early planning stages for a top-to-bottom renewal of the Cannon Building. The AOC has assembled a team of in-house experts and consultants who are working with House leaders to define key aspects of the project. Construction for the Cannon Renewal Project is anticipated to begin in 2015.

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The Ulysses S. Grant Memorial
Status: Planned Building: Capitol Grounds

Restoration of the Grant Memorial is expected to begin late fall with the conservation of the bronze sculptures, which includes properly cleaning, repair, full patination, restoration of lost elements, and application of protective coatings of the two large sculptural groups (Artillery and Cavalry), one equestrian statue (Grant), four reclining lions statues, and two relief plaques.

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Status: Completed Building:

Preparations are underway, near 2nd St and Washington Ave SW, for the American Veterans Disabled for Life Memorial (www.avdlm.org). Memorial construction in and around the footprint of the site (from the southwest of Washington Avenue and northeast of 2nd Street SW) will continue through the fall of 2014. Minor street and lane closures will occur as construction work continues. Pedestrians traveling between the Rayburn and Ford House Office Buildings should use the route below. This route will remain in place for the... More »

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