There's a person called the "Architect of" this structure; he also maintains the Library of Congress building
The Library is housed 
in three buildings on Capitol Hill in Washington, D.C., and also maintains the ... 
On January 26, 1802, he signed a bill that allowed the president to appoint... [DOC] [TLE] About the Grounds | Architect of the Capitol | United States Capitol [PAR] The United States Capitol Building is located in a 58-acre park that was ... 
facilities such as the Library of Congress or the congressional office buildings, 
the Capitol ... Olmsted, who also designed New York's Central Park, is 
considered the ... east end of the Mall (on what was then called Jenkins' Hill); he 
described the site... [DOC] [TLE] About the U.S. Capitol Building | Architect of the Capitol | United ... [PAR] Dec 15, 2015 ...