Serving Congress and the Supreme Court, preserving America's Capitol, and inspiring memorable experiences

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Capitol Rotunda
The U.S. Capitol Rotunda is a large, domed, circular room located 96 feet in...

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Visitor Hours for the Buildings on Capitol Hill
Visitor Hours for the Buildings on Capitol Hill.

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Dr. William Thornton
 The Architect of the Capitol (AOC) is the builder and steward of America’s...

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The AOC is responsible for nearly 600,000 square feet of windows
Architect of the Capitol Stephen T. Ayers reflects on the almost 600,000 square...