Camp Sumter in Andersonville, Ga., was among the Confederacy's largest Civil War military prisons. Of the over 45,000 Union soldiers held there, nearly 13,000 died in captivity. Now the site stands as a memorial to all American prisoners of war. To reach the main entrance of the park please use the following address: 760 POW Road, Andersonville, GA 31711. -- Information from NPS.gov