Tomb of Unknown Soldier in Arlington, Virginia, USA - Stock image
Arlington - Virginia, Arlington National Cemetery, Tomb Of The Unknown Soldier - Arlington, USA, Virginia - US State
'Arlington, Virginia, USA - May 20th. 2012: United States Army Honor Guard soldiers changing guard at the Tomb of the Unknown Soldier while tourists are taking pictures. The changing of the guard ceremony is conducted every hour in the winter time and every half hour during the summer months.'