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

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The Old Supreme Court Chamber is the first room constructed for the use of the nation's highest judiciary body and was used by the Court from 1810 until 1860. Built by Benjamin Henry Latrobe, it was a significant architectural achievement, for the size and structure of its vaulted, semicircular ceiling were virtually unprecedented in the United States.
The Old Supreme Court Chamber is the first room constructed for the use of the...

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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 a Capitol Power Plant chiller that's reaching the end of its life expectancy.
Fiscal Year 2016 Appropriations With the support of Congress, the Architect of...

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The Flanagan clock with marble columns in the background
In a world where everyone carries a cell phone and some carry more than one,...

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Contact Information

Contact Information

Architect of the Capitol
SB-15 US Capitol
202-228-1793 (main number)

Capitol Switchboard (Operator)
202-224-3121

U.S. House of Representatives
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U.S. Senate
Find your member

Capitol Visitor Center
202-226-8000

AOC Procurement
202-226-2557

AOC Employment
202.226.7000


Architect of the Capitol Service Centers (Assistance such as plumbing, electrical, lighting, locks, cleaning for employees on Capitol Hill):

Capitol Building
202-228-8800

House Office Buildings
202-225-4141

Senate Office Buildings
202-224-3141