The United States Architect of the Capitol (AOC) is an agency of the United States government that is responsible for the maintenance, operation, development, and preservation of the United States Capitol Complex. The AOC was established in 1793, and is led by the Architect of the Capitol, who is appointed by the President of the United States with the advice and consent of the Senate. The AOC is responsible for a wide range of tasks, including the construction and repair of the buildings and grounds of the Capitol Complex, the operation of the Capitol Power Plant, and the maintenance of the Library of Congress buildings and grounds. The AOC also provides support services to the Congress, including food service, custodial services, and parking and transportation.