The Tomb of the Unknown Soldier is a solemn and iconic monument located in Arlington National Cemetery in Virginia (outside Washington D.C.), dedicated to honoring unidentified American service members who gave their lives in wars. Established in 1921, the tomb represents all those who have died in service to the United States without their remains being identified. Guarded 24/7 by the elite soldiers of the 3rd U.S. Infantry Regiment, known as “The Old Guard,” the tomb is a symbol of ultimate sacrifice and national gratitude. Visitors often observe the meticulous Changing of the Guard ceremony, a powerful reminder of the nation’s respect for its fallen heroes.