Benjamin Burton Photography

Eastern State Penitentiary The Eastern State Penitentiary, also known as ESP, is a former American prison in Philadelphia, Pennsylvania. It is located at 2027 Fairmount Avenue between Corinthian Avenue and North 22nd Street in the Fairmount section of the city and was operational from 1829 until 1971. The penitentiary refined the revolutionary system of separate incarceration first pioneered at the Walnut Street Jail which emphasized principles of reform rather than punishment. Eastern State Penitentiary was once the most famous and expensive prison in the world but stands today in ruin, a haunting world of crumbling cellblocks and empty guard towers. Its vaulted, sky-lit cells once held many of America's most notorious lawbreakers, including "Slick Willie" Sutton and "Scarface" Al Capone.

 Fort Deleware State Park Fort Delaware State Park is a 288-acre Delaware state park on Pea Patch Island in New Castle County, Delaware, in the United States. A fortress was built on Pea Patch Island by the United States Army in 1815, near the conclusion of the War of 1812, to protect the harbors of Wilmington, Delaware, and Philadelphia, Pennsylvania. The fort was burned and rebuilt in the years prior to the American Civil War, and soon after the start of the war, the fort was converted to a Prisoner of War camp. Fort Delaware continued to protect the mouth of the Delaware River through World War I and II. Pea Patch Island and Fort Delaware was declared surplus land by the United States Department of Defense in 1945.