On the night of June 21, 1783, around 400 unpaid Continental Army veterans from Pennsylvania surrounded Independence Hall in Philadelphia and demanded their back pay from the Confederation Congress. The Pennsylvania state government, sympathetic to the soldiers, refused to call out the militia to disperse them. The Congress fled north to Princeton in the back of carriages. The Pennsylvania Mutiny made one thing unmistakably clear to the framers of the new American government: the federal capital had to be sovereign, controlled by no state. Seven years later, James Madison, Thomas Jefferson, and Alexander Hamilton sat down to dinner and worked out the bargain that put the new capital on the marshy banks of the Potomac, between Maryland and Virginia, near George Washington's plantation at Mount Vernon. Washington himself chose the exact site - ten miles square, diamond-shaped, including the existing port towns of Georgetown and Alexandria. The city the bargain produced has existed for 230 years and is still being argued over.
Pierre Charles L'Enfant, a French-born engineer who had served on Washington's staff during the Revolution, drew the plan for the new city in 1791. L'Enfant proposed a baroque grid of diagonal avenues laid over a Cartesian street grid, with the Capitol and the President's House as the city's two visual anchors connected by a wide diagonal (Pennsylvania Avenue) and by a grand mall extending west from the Capitol. The plan borrowed from Versailles, from Paris, from Karlsruhe, and from L'Enfant's own imagination. He was a difficult man. Washington dismissed him in 1792 after disputes with the city commissioners. Andrew Ellicott completed the survey and made adjustments. Construction proceeded slowly, financed by lot sales and federal appropriations and labored over by enslaved African Americans hired from nearby plantations alongside free workers. The federal government moved from Philadelphia to Washington in November 1800. On August 24, 1814, British troops under Major General Robert Ross marched into the still-half-built city and burned the Capitol, the White House, and most of the federal buildings. A thunderstorm extinguished the fires that night. James Madison and his cabinet returned within weeks; reconstruction began within months.
Washington's African American history is as old as the city. Enslaved laborers built much of the original federal city; free Black communities grew up around the Navy Yard, in Foggy Bottom, and along U Street even before the Civil War. The District abolished slavery in April 1862, nine months before the Emancipation Proclamation. After Lincoln's call for soldiers, the city's Black population doubled during the war years as freed people from Maryland, Virginia, and points south came north for work and protection. By 1957 Washington had become the first major American city with a Black majority population - eventually peaking at around 71 percent Black in 1970 before declining as suburbanization and later gentrification reshaped the city. Frederick Douglass, the abolitionist orator, lived his last twenty years in Anacostia at Cedar Hill. Duke Ellington was born in Shaw in 1899. Howard University, founded by an act of Congress in 1867 and named for the Freedmen's Bureau Commissioner Oliver O. Howard, became the nation's preeminent Black research university. The city was once called Chocolate City - a name George Clinton's Parliament-Funkadelic borrowed for the 1975 album that made it national shorthand.
By 1900, L'Enfant's plan had been buried under a century of haphazard development. Slums occupied land near the Capitol. A railroad station sat on the National Mall. The Tidal Basin had not been built. Congress empaneled the Senate Park Commission, headed by Senator James McMillan and including Daniel Burnham, Frederick Law Olmsted Jr., Charles McKim, and Augustus Saint-Gaudens, to redesign the federal core. The commissioners toured European capitals in 1901, and their plan reshaped Washington into something close to L'Enfant's original vision: the Mall cleared and replanted, the Lincoln Memorial built at its western end (1922), the Tidal Basin dredged, the Jefferson Memorial planned, and the railroad consolidated at Union Station (1907). Franklin Roosevelt's New Deal added the Federal Triangle (a vast complex of neoclassical office buildings between Pennsylvania and Constitution Avenues), the Supreme Court Building, the National Gallery of Art, the Pentagon (begun in 1941, the world's largest office building when completed), and the National Naval Medical Center at Bethesda. The Washington that visitors today encounter is essentially the product of these two construction campaigns.
When Martin Luther King Jr. was assassinated on the evening of April 4, 1968, riots broke out at the intersection of 14th and U Streets within hours. The disturbances spread to 7th Street, H Street NE, and the Anacostia corridor. By the time President Johnson ordered the 82nd Airborne Division into the city, thirteen people had died, 1,200 buildings had been damaged, more than a thousand had been injured, and over 7,600 had been arrested. Insurance redlining ensured most of the burned-out commercial property could not be rebuilt. Crack cocaine arrived in the mid-1980s. By the early 1990s, the District led the nation in homicides per capita. Then, slowly, the city began to come back. The Capital One Arena opened in 1997, drawing 18,000 people downtown most nights it hosted a Wizards or Capitals game. The U Street Metro opened in 1991, the Columbia Heights Metro in 1999. A Whole Foods opened at 14th and P in 2000 and rapidly became one of the highest-grossing in the chain. Marion Barry, the four-term mayor who survived a 1990 drug arrest and returned to office twice, was succeeded by Anthony Williams (1999-2007), Adrian Fenty, Vincent Gray, Muriel Bowser. The District's population, which had dropped to 572,000 in 2000, climbed back to nearly 700,000 by 2024.
Modern Washington holds about 670,000 residents in 68 square miles, with a metropolitan area of 6.4 million spread across Maryland, Virginia, and West Virginia. The population is roughly 45 percent Black, 38 percent white non-Hispanic, 12 percent Hispanic, and 5 percent Asian, with about 14 percent foreign-born. The largest immigrant communities are Salvadoran (centered in Mount Pleasant and Langley Park) and Ethiopian (centered in Shaw's Little Ethiopia and in the Maryland suburbs of Silver Spring) - the District is widely believed to host the largest Ethiopian population outside Addis Ababa. Twenty Smithsonian museums and twenty-one federal monuments make the city the most-visited cultural destination in the United States after Orlando. Three airports serve the metropolitan area: National (3 nm south), Dulles (23 nm west), and Baltimore-Washington International (35 nm northeast). The Metro system, opened in 1976, has six lines and 98 stations. District residents still cannot vote for full congressional representation - the District's license plates carry the slogan TAXATION WITHOUT REPRESENTATION as a Revolutionary-era reminder. The Mall extends two miles from the Capitol to the Lincoln Memorial. On Sunday mornings in March, when the cherry blossoms peak around the Tidal Basin, more than a million people will walk those two miles. The city the founders argued into existence works.
Washington, D.C. occupies roughly 68 square miles centered near 38.9072 degrees N, 77.0369 degrees W, on the north bank of the Potomac River at the head of tidewater navigation. From the air the federal city is unmistakable - the central east-west axis of the National Mall runs from the Capitol dome to the Lincoln Memorial, with the Washington Monument at the midpoint, the White House just north of the axis, and the major monumental architecture clustered around the Mall and the Tidal Basin. The Potomac River bends around the city's southern and western edges. Best viewed at 2,500 to 5,000 feet AGL; the entire city lies within the Washington FRZ and the prohibited area P-56A, with the most restrictive airspace in the United States and rigorous identification requirements for any general aviation flight. Nearest airports are Ronald Reagan Washington National (KDCA) 3 nm south, College Park (KCGS) 7 nm northeast, and Washington Dulles (KIAD) 23 nm west.