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The Architect of the Capitol's challenge is unique – maintaining aging, iconic...

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Specific information for the United States Capitol campus regarding street...
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Preserving Historic Windows and Doors

By Kristen Frederick

Preservation allows the building to retain much of its original character and charm, while increasing the building's functionality for those who work and visit within its walls.

Restoring the windows of the Cannon House Office Building in Washington, D.C.
July 7, 2016
Some of the most majestic and unmistakable trees on campus were planted during the Olmsted period.More »
Close-up photo of lion detail at the Supreme Court Building.
March 6, 2018
Imagery of the lion is well-represented in architectural details on Capitol Hill.More »
A current view of the U.S. Capitol, Room HB-29, which once served as a bakery during the Civil War.
March 27, 2018
A look back at the U.S. Capitol's baking operations during the Civil War.More »
February 25, 2014
Escape the winter weather and experience the blooms evoking spring in the U.S. Botanic Garden at the Orchid Symphony exhibition.More »
July 6, 2016
If you live, work or visit Capitol Hill, stay alert for signs that you, a colleague or a loved one is too hot.More »
March 19, 2014
Investigate the meaning behind the Car of History Clock in the U.S. Capitol's National Statuary Hall.More »
The Superintendent of Capitol Grounds for Architect of the Capitol searches Payette National Forest to select the 2016 Capitol Christmas Tree.
November 2, 2016
It can be hard to find a tree in the forest that meets all of the Capitol Christmas Tree criteria, but the Superintendent of Capitol Grounds has done it again.More »
Blue heron carved in stone at the focal point, the central fountain, in the perimeter wall surrounding Capitol Square.
March 15, 2017
Architect of the Capitol Stephen Ayers describes his love of birds and their role in the focal point of Capitol Square's perimeter wall.More »
February 20, 2013
Montgomery Meigs – a man who built the Capitol while helping save the Union it represents - may be America’s greatest engineer. More »
Squirrels on the Capitol Grounds
April 11, 2013
When walking across the Capitol Grounds there is one critter that can consistently be seen out and about – the squirrel. When did squirrels first come to Washington, D.C. and how did they end up here? Archivist Andria Leo took a look through AOC’s historical records to investigate the history of the squirrel at the Capitol. More »
August 5, 2015
The U.S. Capitol's rotunda is closed this month to prepare for restoration, but there are six other rotunda areas visitors should be sure to see.More »
Condition of the stone on the Russell Building pre-restoration.
January 11, 2018
Stone preservation will continue to be a priority of the AOC as the best way to maintain the buildings across the Capitol campus is to constantly monitor them.More »
July 27, 2016
Just like us, plants need special care in the extreme heat. Following these tips from the U.S. Botanic Garden will help protect your plants during the hottest days of summer. More »
Close-up detail photo with Statue of Freedom during conservation in 1993.
July 17, 2018
An in-depth look at the evolution of women in art at the U.S. Capitol.More »
June 18, 2013
Too hot or too cold – there is no pleasing everyone when it comes to the right temperature in the office. While today the AOC provides a climate-controlled environment to the buildings of Capitol Hill, two centuries ago this wasn't the case.More »

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