The U.S. Capitol Rotunda is a large, domed, circular room located 96 feet in diameter and 180 feet in height located in the center of the United States Capitol on the second floor.
The U.S. Capitol Rotunda is a large, domed, circular room 96 feet in diameter...


The Summerhouse on the Capitol Grounds surrounded by pink azalea flowers.
A few ideas to help you in planning a visit to Capitol Hill.


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


Saving Energy in the Workplace
On this 45th anniversary of Earth Day, the AOC is proud to announce the...

News & Notices

Christmas Tree to arrive at U.S. Capitol on November 25

Nov 13, 2013

The U.S. Capitol Christmas Tree will arrive at the West Front of the U.S. Capitol along First Street, NW, at 10 a.m. on Monday, November 25, 2013. This year’s tree is an Engelmann spruce from the Newport Ranger District of the Colville National Forest in Washington State. It was harvested on November 1, and is currently traveling from Washington across the country; making stops in 22 communities along the way. After it arrives at the U.S. Capitol and is secured in the ground, the tree will be decorated with thousands of ornaments, handcrafted by Washingtonians to reflect this year’s theme, “...

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AOC Launches U.S. Capitol Dome Restoration

Oct 22, 2013

The Capitol at Dawn
The United States Capitol Dome, symbol of American democracy and world-renowned architectural icon, was constructed of cast iron more than 150 years ago. The Dome has not undergone a complete restoration since 1959-1960 and due to age and weather is now plagued by more than 1,000 cracks and deficiencies. Pitted and corroded acorn finial on Capitol Dome. (view more images of damage) This fall the Architect of the Capitol will begin a multi-year project to repair these deficiencies, restoring the Dome to its original, inspiring splendor and ensuring it can safely serve future generations of...

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AOC releases FY 2012 Sustainability, Energy and Water Conservation Management Report

Aug 29, 2013

The Architect of the Capitol (AOC) has released the Fiscal Year 2012 Sustainability, Energy and Water Conservation Management Report for Capitol Hill. In FY 2012, the AOC surpassed its annual energy reduction goals and achieved its sustainability objectives for the year. The Sustainability, Energy and Water Conservation Management Report describes the AOC’s efforts to reduce energy and water usage and tracks progress made through FY 2012, costs avoided as a result of energy savings, and expected outcomes for future years. The AOC is committed to a more energy-efficient and sustainable...

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Titan Arum in Bloom at the U.S. Botanic Garden

Jul 10, 2013

Titan arum in bloom at the U.S. Botanic Garden
Update: The plant has completed its bloom cycle and is no longer on display at the U.S. Botanic Garden. The titan arum (Amorphophallus titanum), also known as the corpse flower or stinky plant, is in bloom at the United States Botanic Garden Conservatory. It went on display on Thursday, July 11, and began to bloom on Sunday, July 21. Once fully open, it may remain in bloom for 24 to 48 hours, and then it will collapse quickly.   The renown of the titan arum comes from its great size – it is reputed to have the largest known unbranched inflorescence in the plant kingdom. Referred to as the...

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Moving Offices - Improving Lives

Jul 08, 2013

Ralph Zollicoffer, Painter's Helper at the AOC poses with some cans of paint
“You’ve got to shine,” says Tony Blue, a woodcrafter’s helper working for AOC through a partnership with So Others Might Eat (SOME). “That’s what our SOME instructor told us—be on your best, do your best and always try to learn something different.” So Others Might Eat is a D.C.-based organization that provides comprehensive, holistic support to D.C. citizens who are homeless and poor. While many people know it for providing meals, and it does serve 1,000 meals a day, SOME also has a Center for Employment Training whose mission is to "empower people out of homelessness and poverty and into...

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Teaming Up for Accessibility

Jun 17, 2013

AOC employees plan renovations to Representative Tammy Duckworth's Office
“This work had to be done right. Period,” said Mark Italiano, project manager for the AOC's House Superintendent's Office, as he described how in less than four weeks, a dedicated team of tradecrafts experts was able to transform Room 104 in the Cannon House Office Building into a completely wheelchair-accessible office suite. The office suite was being prepared for Member-Elect Tammy Duckworth of Illinois, a veteran of the Iraq War, who in 2004 lost both legs and part of the use of her right arm when the helicopter she was piloting was hit by a rocket-propelled grenade. Kevin Hildebrand,...

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Laura Condeluci

Dome Restoration

Justin Kieffer

Cannon Renewal

Justin Kieffer