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

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"Congress Investigates" exhibit includes items like this Watergate evidence.
This special exhibit at the Capitol Visitor Center is on display now through...

Our Blog

Read a blog about the art, architecture and work on the Capitol Hill written by AOC's experts.

Crumbling Down and Building Up

Posted by Matt Guilfoyle on September 29, 2014

Juan Sandoval and Jose Hernandez using a lewis to remove stones from Olmsted Terrace.
Addressing the stone pandemic across the Capitol campus takes a team of historic preservationists, structural engineers and stonemasons, among others.

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Instant Perspective on a #CapitolMorning

Posted by Sarah Bublitz on September 22, 2014

Instagrammers in the Olmsted Summerhouse on the Capitol Grounds
Early on this beautiful September morning, a group of Instagrammers came together to explore and celebrate the U.S. Capitol during our second InstaMeet.

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Cara and the Chocolate Tree

Posted by Lee Coykendall on September 16, 2014

Cara holding her chocolate tree.
With Sprouts at the U.S. Botanic Garden, children learn about the magical world of plants.

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Anne Frank Tree at the Capitol

Posted by Sharon Gang on July 21, 2014

Anne Frank Tree and marker planted in the ground in front of the Capitol
One of Anne's few connections to the outside world while hiding in the secret annex was a nearby white chestnut tree which she could see from the attic window.

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What's hiding in National Statuary Hall?

Posted by Sharon Gang on May 20, 2014

AOC employee working on touching up columns in Statuary Hall
Next time you're in Statuary Hall on the second floor of the U.S. Capitol near the House Chamber, look closely.

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National Garden Highlights Regional Plants and Sustainable Practices

Posted by Matt Guilfoyle on May 12, 2014

AOC working cleaning the National Garden
Conceived as an outdoor laboratory for gardening in harmony with natural ecosystems, the National Garden opened to the public on October 1, 2006.

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