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

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This painting by Allyn Cox depicts the cornerstone laying ceremony and is currently on display in the House Wing of the U.S. Capitol Building.
The cornerstone was laid on Wednesday, September 18, 1793, during the first...

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A virtual Map of Capitol Hill from above
View a map of the U.S. Capitol and other buildings and grounds cared for by the...

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Painted Portrait of Benjamin Henry Latrobe
Benjamin Henry Latrobe was hired by President Jefferson in 1803 to fill the...

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The figure of Liberty in the Apotheosis of George Washington is depicted wearing a Liberty Cap
The liberty cap was the symbol of freedom and liberty commonly used in the 19th...

Architecture

Architecture

AOC Architects holding a blueprint while working

The Architect of the Capitol (AOC) employs more than two dozen architects who work in different divisions across the agency with various roles and responsibilities.

Some architects have the position of project manager, but the act of managing a project is a distinct skill for which they are trained independently of their professional background.

Many architects work directly within their chosen profession and have three general duties: execution of studies and design for projects, professional advice and guidance to the jurisdictions, and technical support to projects through reviews of consultant designs as managed by project managers. AOC architects also usually have extensive experience in historic preservation, which is generally developed through on-the-job experience.  

“Each of the buildings on Capitol Hill was carefully designed and built, and we need to make sure we preserve and maintain what others created for future generations,” says Mary Oehrlein, AOC historic preservation officer. Oehrlein continually stresses the need for regular maintenance, a task she compares to preventive medicine. “Properly maintaining the buildings is the best preservation.”

AOC leads the charge in successfully reducing the energy used in the historic public buildings within its purview, arguably the most difficult set of buildings in which to attempt such reductions. In addition, the AOC is one of the few places where staff architects and engineers work directly with highly skilled, in-house preservation crafts persons on a day-to-day basis.  

AOC recognizes that the ultimate goal in sustainability is the preservation of historic structures into virtual perpetuity: the buildings have no projected end-of-life, but are renewed over and over again. AOC employees are entrusted to preserve Capitol Hill’s national treasures for Congress and the public to enjoy for years to come.