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In Emanuel Leutze’s mural, a group of pioneers and their train of covered wagons are pictured at the continental divide, looking towards the sunset and the Pacific Ocean. The border depicts vignettes of exploration and frontier mythology. Beneath the central composition is a panoramic view of their destination “Golden Gate,” in San Francisco Bay.
Emanuel Leutze’s mural celebrates the western expansion of the United States....

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

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Photo of Stephen T. Ayers, FAIA, LEED AP, Architect of the Capitol in front of the Capitol Building
On February 24, 2010, President Barack Obama nominated Mr. Ayers to serve as...

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Ted Bechtol, AOC Capitol Grounds Division
For two beautiful summer days in late July, I traveled around Chippewa National...

Who We Are

Michael G. Turnbull

A photographic portrait of Michael G. TurnbullAssistant Architect of the Capitol

Mr. Turnbull received his Bachelor of Architecture, a five-year professional degree, at the University of Illinois in Chicago. 

After university, Mr. Turnbull worked for several Chicago architectural firms, including Skidmore, Owings and Merrill, and O’Donnell, Wicklund, Pigozzi, and Peterson on numerous institutional and commercial projects. In 1984, Mr. Turnbull was retained by the Art Institute of Chicago to provide oversight on the museum’s capital building campaign.

After managing several successful renovations, he was created Director of the newly formed Department of Design and Construction. During his tenure with the museum, Mr. Turnbull oversaw significant and award-winning projects including the Daniel F. and Ada L. Rice Building Addition, the Ryerson Library Renovation, the Allerton Building Renovation as well as several major monument restorations for the museum’s Ferguson Fund, including the Clarence F. Buckingham Memorial Fountain and Lorado Taft’s Fountain of Time.

In 1998, Mr. Turnbull was selected by the 10th Architect of the Capitol, Alan M. Hantman to be the Assistant Architect of the Capitol and instituted major reorganization initiatives to improve project delivery and programming. Mr. Turnbull established a new Project Management Division, a Design Services Department, a Facilities Planning and Programming Department and restructured the operations at the Power Plant into a cohesive Utilities and Infrastructure unit.  

In 2002, Mr. Turnbull took on the Architect of the Capitol’s statutory responsibilities on the District of Columbia’s Zoning Commission (including the Board of Zoning Adjustment) and the National Capital Memorial Commission. Mr. Turnbull also serves as the agency’s senior executive on the modernization of the Supreme Court of the United States.

Mr. Turnbull is a Fellow of the American Institute of Architects, certified with the National Council of Architectural Registration Boards and is a licensed architect in Virginia, Maryland, the District of Columbia and Illinois.