51 Cemeteries Project: #50, Arlington National Cemetery, Arlington VA

Arlington National Cemetery is one the most famous cemetery in the world. More than 300,000 Americans who served their country are buried here. These days, they conduct more than 20 funerals each day, and space is becoming a premium as wars battle on in Iraq and Afghanistan. One of the most popular locations to visit is the Tomb of the Unknown Soldier. These photos were taken during the changing of the guard.

Every Memorial Day, thousands of flags are placed in front of the graves by the soldiers from the 3rd U.S. Infantry Unit (also known as Old Guard) during a three hour ceremony called a "Flags-In"

Arlington National Cemetery is spread over 624 arces and it has the second-largest number of people buried at any of the 130 national cemeteries in the US. For more info on Arlington National Cemetery's rich history, check out its web site at http://www.arlingtoncemetery.org/