Congressional office buildings

House office buildings. Front to Back: Rayburn Building, Longworth Building, Cannon Building. Behind the Cannon Building is the James Madison Memorial Building (part of the Library of Congress)

The Congressional office buildings are the office buildings used by the United States Congress to augment the limited space in the United States Capitol. The Congressional office buildings are part of the Capitol Complex are thus under the authority of the Architect of the Capitol and protected by the United States Capitol Police. The office buildings house the individual offices of each U.S. Representative and Senator as well as committee hearing rooms, staff rooms, multiple cafeterias, and areas for support, committee, and maintenance staff.

The Congressional office buildings are connected to the Capitol by means of underground pedestrian tunnels, some of which are equipped with small railcars shuttling users to and from the Capitol, which together form the Capitol subway system. Congressional pages are responsible for carrying packages and messages from the two chambers to the buildings.

The three Senate office buildings are along Constitution Avenue north of the Capitol:

Russell Senate Office Building (RSOB, completed 1908)
Dirksen Senate Office Building (DSOB, completed 1958)
Hart Senate Office Building (HSOB, completed 1982)

The three House office buildings are along Independence Avenue south of the Capitol:

Cannon House Office Building (CHOB, completed 1908)
Longworth House Office Building (LHOB, completed 1933)
Rayburn House Office Building (RHOB, completed 1965)

A fourth building, the Ford House Office Building, which used to house the FBI's fingerprint records, sits a few blocks southwest of the others. A fifth building, the O'Neill House Office Building (previously known as "House Annex-1") was named after former Speaker of the House Thomas "Tip" O'Neill. It was demolished in 2002.

The U.S. Capitol Complex also includes a Page Residence Hall and the Capitol Power Plant, both on the House side of the Capitol.

United States Capitol Complex
United States Capitol
House	Congressional office buildings: Cannon House Library Ford Longworth Rayburn O'Neill (demolished, 2002)
Senate	Appropriations Committee Suite Senate Reception Room Senate chamber Old Senate Chamber Congressional office buildings: Dirksen Hart Mountains and Clouds Russell Senate Library
Library of Congress	Adams Jefferson Madison Law Library of Congress Mary Pickford Theater
Individual features	Dome Statue of Freedom The Apotheosis of Washington Rotunda Declaration of Independence painting Frieze of American History Surrender of General Burgoyne Surrender of Lord Cornwallis General George Washington Resigning His Commission Columbus Doors National Statuary Hall Statues Crypt Hall of Columns Brumidi Corridors Apotheosis of Democracy First Reading of the Emancipation Proclamation of President Lincoln Scene at the Signing of the Constitution of the United States Revolutionary War Door Washington at Princeton Westward the Course of Empire Takes Its Way Vice Presidential Bust Collection President's Room Vice President's Room Congressional Prayer Room Old Supreme Court Chamber Washington's Tomb Visitor Center Lincoln Catafalque
Others	Botanic Garden Grant Memorial Judiciary Building Power Plant Reflecting Pool Subway System Supreme Court Building Union Square Senate Page Residence Pennsylvania Avenue

Congressional office buildings

See also