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

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U.S. Capitol Dome
The U.S. Capitol’s dome made of cast iron was designed by Thomas U. Walter and...

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Prohibited Items at the U.S. Capitol Building
In order to ensure the safety of visitors and staff and to preserve the...

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East Front of the U.S. Capitol Building
AOC’s annual Performance and Accountability Report provides the results of the...

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Union Troops at the Capitol - 1861
Weekdays at 3 p.m. — In honor of the 150th Anniversary of the Civil War, a...