Stewards of the iconic buildings and grounds of Capitol Hill since 1793.

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National Statuary Hall
The National Statuary Hall Collection in the United States Capitol Building is...

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Snapshot of a crowd of people on a guided tour through the Rotunda of the U.S. Capitol
Official Tours of the U.S. Capitol Building are offered Monday through...

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Photo of a Capitol Power Plant chiller that's reaching the end of its life expectancy.
Fiscal Year 2016 Appropriations With the support of Congress, the Architect of...

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Work Photography of a Worker repairing the Hart Roof at sunset.
Construction activities for the repair and replacement of the Hart Senate...

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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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