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

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

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Benjamin Henry Latrobe
Benjamin Henry Latrobe was hired by President Jefferson in 1803 to fill the...

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AOC employees plan renovations to Representative Tammy Duckworth's Office
A team of tradecrafts experts at the AOC transform an office into a completely...