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.
Capitol Dome
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.
Getting Here
Located at the center of Washington, D.C., the U.S. Capitol Building and other...
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Photo of Stephen T. Ayers, FAIA, LEED AP, Architect of the Capitol in front of the Capitol Building
Stephen T. Ayers, FAIA, LEED AP, Architect of the...
On February 24, 2010, President Barack Obama nominated Mr. Ayers to serve as...
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AOC employee working on touching up columns in Statuary Hall
What's hiding in National Statuary Hall?
Next time you're in Statuary Hall on the second floor of the U.S. Capitol...
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What's New

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  • Tree Lighting 2012
  • Capitol Dome Restoration
  • Juan Sandoval and Jose Hernandez using a lewis to remove stones from Olmsted Terrace.
  • Cannon Renewal Project

Projects

Get the latest information on AOC projects taking place across Capitol Hill.
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Events

InstaMeet event photo.
Find out about events you can attend when visiting Capitol Hill.
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Our Blog

Jim Saenger, the Capitol’s Carillonneur.
Read a blog about the art, architecture and work on Capitol Hill written by AOC’s experts.
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