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Architect of the Capitol

U.S. Capitol Building, Washington, DC 20515


Chief Operating Officer Christine A. Merdon

Assistant Architect of the Capitol Michael G. Turnbull
General Counsel Jason Baltimore
Inspector General Kevin Mulshine

Chief Administrative Officer Dan Cassil, Acting
Chief Executive Officer, Visitor Services Beth Plemmons
Chief Financial Officer Thomas Carroll

Director, Communications and Congressional Relations Mary Anne Bittner
Director, Planning and Project Management Peter W. Mueller
Director, Safety, Fire and Environmental Programs Susan Adams
Director, Security Programs Kenneth A. Eads
Director, Utilities and Power Plant Operations Christopher Potter

Executive Director, U.S. Botanic Garden Ari Novy
Facility Manager, Supreme Court Buildings and Grounds Trent Wolfersberger

Superintendent, Capitol Building Mark Reed
Superintendent, Capitol Grounds Theodore R. Bechtol, Jr.
Superintendent, House Office Buildings William M. Weidemeyer
Superintendent, Library Buildings and Grounds Larry D. Brown
Superintendent, Senate Office Buildings Takis Tzamaras

The Architect of the Capitol maintains the U.S. Capitol and the buildings and grounds of the Capitol campus.

Permanent authority for the care and maintenance of the U.S. Capitol was established by the act of August 15, 1876 (40 U.S.C. 162, 163). The title Architect of the Capitol (AOC) is the official title of both the agency and the person.

Historically, the President appointed the Architect of the Capitol for an indefinite term. Legislation enacted in 1989, however, provides that the President, with the advice and consent of the Senate, appoints the Architect for a 10-year term from a list of three candidates whom a congressional commission recommends. Upon confirmation by the Senate, the Architect becomes an official of the legislative branch as an officer of Congress. The Architect is eligible for reappointment at the end of his or her 10-year term. While overseeing the agency, the Architect also serves as the Acting Director of the U.S. Botanic Garden.


The Architect of the Capitol serves the Congress and Supreme Court in its capacity as the builder and steward of the landmark buildings and grounds of Capitol Hill. AOC staff preserves and maintains the art, historic buildings, monuments, and inspirational gardens on the Capitol campus. The AOC team, which comprises more than 2,000 employees who provide around the clock service, creates a safe environment and inspiring experiences for all who visit and work on Capitol Hill.

The AOC traces its beginnings to the laying of the Capitol cornerstone in 1793. The agency oversees the operations and care of more than 17.4 million square feet of facilities, 580 acres of grounds, and thousands of works of art. The Capitol campus accommodates 30,000 daily occupants and hosts more than 3 million visitors annually.


Sources of Information


AOC experts write on the architecture, art, and work on the Capitol Hill.


Business Opportunities

Information for contractors and small businesses—delivery instructions, procedures, procurement opportunities, and programs—is accessible online.



Information on working with the AOC, open positions, and the application process is available on the "Careers" Web page.



A multimedia gallery is available online.



President George Washington appointed commissioners to provide buildings and accommodations for Congress. The commissioners hired the French artist and engineer Major Pierre Charles L'Enfant, a Revolutionary War veteran, to lay out the new city. They also staged a competition for the design of the Capitol. Dr. William Thornton's entry won the competition. To learn more about the first "architect of the capitol" and the Architects that followed, visit the AOC's history Web pages.


Planning a Visit

Information on accessibility services, activities, tours, visiting hours, and where to shop and eat is available online.



The AOC publishes a variety of publications that are accessible online.


Site Map

The Web site map allows visitors to look for specific topics or to browse content that aligns with their interests.


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