Arlington National Cemetery occupies 612 acres.
It is located in Virginia on the Potomac River.
Lat: 38° 52' 45"N, Lon: 077° 04' 26"W.
In 1864, Arlington became a military cemetery.
Initially, only the poor or unidentified were entombed at Arlington.
As time passed, Arlington became a burial site coveted by veterans and well known identities.
More than 240,000 service members and their dependents are buried there.
In 1921, an Unknown American Soldier of World War I was buried in the cemetery.
The Tomb of the Unknown Soldier was opened to the public without ceremony in 1932.
Two additional Unknowns from World War II and the Korean War, were buried May 30, 1958.
The inscription carved on the Tomb of the Unknowns reads:
HERE RESTS IN
HONORED GLORY
AN AMERICAN
SOLDIER
KNOWN BUT TO GOD
National Geographic: Arlington - Field of Honor