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

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Capitol Visitor Center
The U.S. Capitol Visitor Center provides a welcoming and educational...

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Capitol Visitor Center
The Office of Congressional Accessibility Services (OCAS) provides a variety...

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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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Frankie the Bee
Come learn about the USBG's endangered species and native plant collections

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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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