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

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Surrender of Lord Cornwallis
The painting Surrender of Lord Cornwallis by John Trumbull is on display in the...

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Guided Tours: Buildings on Capitol Hill
Official Tours of the U.S. Capitol Building are offered Monday through...

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Small Business Program
Information for Small Businesses interested in doing business with the...

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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...

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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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