#Eastern State Penitentiary, Pennsylvania, USA
Most of us might not be aware of the ‘Pennsylvania System’! Well, to explain it, it was a system wherein the prisoners were dumped into solitude and at times, they were left to die in such tragic circumstances. Introduced in 1829 in Philadelphia in the Eastern State Penitentiary prison, the aftermath of this horrific practice has led to several spine-chilling paranormal activities in this prison.