Arlington National Cemetery is known as one of the oldest and most significant national cemeteries in the history of the United States. Established during the Civil War and covering 624 acres of land, it is the last shelter of the souls of more than 300,000 American patriots, including President William Taft, President John F. Kennedy and other famous persons such as Robert F. Kennedy and Jacqueline Kennedy Onassis.

On of the most visited sites within Arlington National Cemetery is the Tomb of the Unknown Soldier which is located on the top of the hill that oversees Washington, D.C.. It was built to honor the service and sacrifice of the American heroes who lost their lives in WWI, WWII and the Korean War and the Vietnam War. The Tomb is guarded by especially trained soldiers of the 3rd United Sates Infantry Regiment 24 hours a day, 7 days a week, 365 days a year.