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

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Apotheosis of Washington
Painted in 1865 by Constantino Brumidi, the Apotheosis of Washington in the...

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

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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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Early House of Representatives Chamber (artist representation)
Too hot or too cold – there is no pleasing everyone when it comes to the right...

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A Century of Service

This year, the Capitol Power Plant marks 100 years of steady service of steam and chilled water to heat and cool the Capitol. In that century of service, the plant has undergone significant changes as new buildings were built, and more modern and efficient equipment was installed.

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