The Capitol complex includes three major office buildings and one annex building for the House of Representatives and three major office buildings for the Senate. (A map of the U.S. Capitol complex [112k] and an aerial photograph [50k] showing the locations of the congressional office buildings are available.) Although several of these buildings were named long after their construction and occupancy, their present names are used here. | U.S. House of Representatives
| | | Location: Southeast of the Capitol on a site bounded by Independence Avenue, First Street, New Jersey Avenue, and C Street, S.E. Date Occupied: January 1908 Area: 671,921 square feet | Architect of the Capitol: Elliott WoodsAssociate Architects: John Carrère and Thomas Hastings |
| | | Location: South of the Capitol on a site bounded by Independence Avenue, New Jersey Avenue, South Capitol Street, and C Street, S.E. Date Occupied: April 1933 Area: 599,675 square feet | Architect of the Capitol: David LynnAssociate Architects: Allied Architects |
| | | Location: Southwest of the Capitol on a site bounded by Independence Avenue, South Capitol Street, First Street, and C Street, S.W. Date Occupied: February 1965 Area: 2,375,000 square feet | Architect of the Capitol: J. George StewartAssociate Architects: John Harbeson, William Hough, William Livingston, and Roy Larson |
| Over the years, two other buildings were acquired for office space by the House of Representatives. The Congressional Hotel on C Street, obtained in 1972, was subsequently named for former Speaker Thomas P. O'Neill, Jr.; it was demolished in 2002. In 1975 a building (585,532 square feet) located at Second and D Streets originally built for the Federal Bureau of Investigation was acquired; it was subsequently named for former Minority Leader Gerald R. Ford. | United States Senate
| | | Location: Northeast of the Capitol on a site bounded by Constitution Avenue, First Street, Delaware Avenue, and C Street, N.E. Date Occupied: March 1909 Area: 658,250 square feet | Architect of the Capitol: Elliott WoodsAssociate Architects: Robert Carrère and Thomas Hastings |
| | | Location: Northeast of the Capitol, adjoining the Hart Senate Office Building on a site bounded by Constitution Avenue, Second Street, First Street, and C Street, N.E. Date Occupied: October 1958 Area: 712,910 square feet | Architect of the Capitol: David LynnAssociate Architects: Otto Eggers and Daniel Higgins |
| | | Location: Northeast of the Capitol, adjoining the Dirksen Senate Office Building on a site bounded by Constitution Avenue, Second Street, First Street, and C Street, N.E. Date Occupied: November 1982 Area: 1,019,750 square feet | Architect of the Capitol: George M. White Associate Architects: J. Carl Warnecke and A. Eugene Kohn |
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