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U.S. Capitol Dome was constructed with 8,909,200 pounds of ironwork bolted together in a masterpiece of American will and ingenuity.
The U.S. Capitol’s dome made of cast iron was designed by Thomas U. Walter and...

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Visitor Guide Gives Tour of Rotunda
Please note: Many of these Capitol Hill buildings are working office buildings...

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Painted portrait of Dr. William Thornton
The Architect of the Capitol (AOC) is the builder and steward of America’s...

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Picture of Richard Hartlage, Partner and CEO of Land Morphology in front of a garden
Learn from Partner and CEO of Land Morphology Richard Hartlage's experiences on...

Explore Capitol Hill