Eastern State Penitentiary - historic radial prison and museum

Eastern State Penitentiary opened in 1829 and operated until 1971; its radial floor plan and individual-cell system influenced prison design internationally. The site was an early implementer of the 'Pennsylvania system' of solitary confinement, a practice later criticized and widely studied in penal history. The building is preserved as a museum and historic site offering guided tours and exhibitions on the history of incarceration. Many locals visit for daytime tours and educational programming about criminal justice history.