Arlington National Cemetery, located in Arlington, Virginia, is a major American military cemetery created during the Civil War on the grounds of Arlington House, the former estate of the wife of General Lee, the leader of the Confederate armies. It is located exactly opposite Washington D.C., across the Potomac River from the Pentagon buildings.
More than 290,000 people are buried on this 2.53 km2 plot, veterans of all American wars, from the War of Independence to the most recent conflicts of the 21st century, the Iraq and Afghanistan wars, the American Civil War, the two World Wars, the Korean War and the Vietnam War.
Also buried here are the bodies of 10 French servicemen who died by accident or illness on American soil while training part of General Pershing's army during the First World War. The graves are decorated with flowers every November 11 by the French Embassy in Washington. Source: Wikipedia