1. Eastern State Penitentiary, Pennsylvania, United States
Set up in 1829, Eastern State Penitentiary is a previous jail in Philadelphia, Pennsylvania. It’s known for being the principal jail of its kind to present isolation, or what they used to call, the Pennsylvania System. Detainees were sent to lone amid this time as a type of recovery. They would be totally disengaged, living alone, eating alone, and practicing alone in their own particular individual yards. At whatever points a prisoner left his cell, a dark hood would be put over his head for guaranteed he stayed in restriction.