U.S. Capitol Building

U.S. Capitol Building
Name	U.S. Capitol Building
Caption	West front of the U.S. Capitol
Location	Washington, D.C.
Architect	William Thornton; Benjamin Henry Latrobe; Charles Bulfinch; Thomas U. Walter
Client	United States Congress
Construction start	1793
Completion date	1868 (dome completed)
Style	Neoclassical

U.S. Capitol Building

The U.S. Capitol Building serves as the seat of the United States Congress and a symbol of the United States federal system. Located on Capitol Hill in Washington, D.C., it houses the chambers of the United States Senate and the United States House of Representatives, and functions as a site for state ceremonies such as presidential inaugurations and joint sessions of Congress.

History

The Capitol's origin traces to the selection of Pierre Charles L'Enfant's plan for Washington, D.C. and the 1790 Residence Act that involved figures like George Washington and Thomas Jefferson. Groundbreaking took place in 1793 with Washington laying the cornerstone; subsequent decades involved architects such as William Thornton and Benjamin Henry Latrobe who responded to political pressures from leaders including John Adams and James Madison. The building's growth paralleled national events including the Louisiana Purchase era, the War of 1812—during which British forces burned parts of Washington—and the antebellum expansion leading into the American Civil War. Reconstruction phases engaged politicians like Abraham Lincoln and lawmakers of the Thirty-seventh United States Congress, and the completed iron dome was installed during the administration of Andrew Johnson after designs by Thomas U. Walter. The Capitol remained central during episodes such as the Civil Rights Movement, legislative milestones like the passage of the Civil Rights Act of 1964, and state funerals for leaders including John F. Kennedy and Ronald Reagan. Modern events include the 21st-century security and restoration efforts tied to administrations led by figures such as George W. Bush, Barack Obama, Donald Trump, and Joe Biden.

Architecture and design

The Capitol exhibits Neoclassical architecture influenced by architects like Andrea Palladio and movements seen in structures such as the Panthéon, Paris and The British Museum. Original plans by William Thornton were refined by Benjamin Henry Latrobe and Charles Bulfinch; later expansions were executed under Thomas U. Walter who designed the present cast-iron dome inspired by the Florence Cathedral and Les Invalides. Interior spaces contain artworks and decorations by artists and sculptors associated with national commissions and institutions, including paintings related to the American Revolutionary War, sculptural programs honoring figures like George Washington and Thomas Jefferson, and statuary drawn from the National Statuary Hall Collection. Structural elements reference engineering advances contemporaneous with projects like the Eads Bridge and the use of cast iron as in the Crystal Palace.

Construction and renovations

Initial construction (1793–1800) created the original House of Representatives and Senate chambers; subsequent early 19th-century work by Latrobe and Bulfinch addressed expansions necessitated by territorial growth after acts such as the Missouri Compromise. Post-1814 reconstruction followed the Burning of Washington; mid-19th-century enlargements chaired by Walter produced the present wings and dome, completed in 1868 with materials and techniques related to industrial advances in the era of the Industrial Revolution. 20th-century projects included the extension of underground facilities connected to sites like the Library of Congress and integration with systems developed during the New Deal era. Late 20th- and early 21st-century restorations addressed issues similar to those in preservation projects at the Smithsonian Institution and the National Cathedral, focusing on masonry, electrical systems, and accessibility, with oversight by bodies such as the Architect of the Capitol and congressional committees including the United States House Committee on House Administration.

Grounds and surrounding complex

The Capitol sits atop Capitol Hill within a landscape planned alongside the Capitol Reflecting Pool and adjacent to landmarks such as the United States Botanic Garden, the Supreme Court of the United States building, and the Library of Congress on the Capitol Complex. The grounds host monuments and memorials that reference events and figures including the Vietnam Veterans Memorial, the World War II Memorial, and statues from the National Statuary Hall Collection representing states admitted after acts of Congress like the Admission of California and Admission of Texas. Urban design connections link the Capitol to the National Mall, the White House, and axes proposed by planners including Daniel Burnham and L'Enfant, and to transportation nodes such as the Union Station and local Washington Metro lines.

Uses and functions

Functionally, the Capitol houses legislative activity for the United States Senate and United States House of Representatives, committee hearings tied to bodies such as the United States Senate Committee on the Judiciary and the House Committee on Energy and Commerce, and floor debates producing statutes like the Affordable Care Act and appropriations legislation. It hosts constitutionally rooted events including joint sessions for the counting of Electoral College votes and presidential addresses such as the State of the Union Address. Ceremonial uses include lying in state for national leaders represented by relatives and military honors coordinated with entities like the United States Armed Forces and the National Park Service during public commemorations like Independence Day (United States) events.

Security and incidents

Security and incidents at the Capitol have involved law-enforcement and legislative responses by organizations such as the United States Capitol Police, the Metropolitan Police Department of the District of Columbia, and federal agencies including the Federal Bureau of Investigation. Notable episodes include the Burning of Washington in 1814, the 1954 attack on the House by Puerto Rican nationalists associated with events connected to the Puerto Rican Nationalist Party, the 1998 Capitol shooting where a gunman attacked a member of Congress, and the January 6, 2021 attack tied to supporters of then-President Donald Trump that prompted wide-ranging security reviews and legislative inquiries by committees like the United States House Select Committee to Investigate the January 6th Attack on the United States Capitol Complex. Ongoing security measures intersect with privacy and civil-liberties discussions involving the United States Department of Justice and judicial review in federal courts including the United States Court of Appeals for the District of Columbia Circuit.

Category:Buildings and structures in Washington, D.C.