Where can the oldest prison in America that still houses prisoners be found?

The oldest prison in America that still houses prisoners is located in Pennsylvania, specifically the Eastern State Penitentiary in Philadelphia. Established in 1829, it was one of the first prisons to implement the concept of solitary confinement, reflecting a shift toward more humane treatment of inmates at the time. The design and architecture of Eastern State influenced penitentiary systems throughout the United States.

The significance of its location in Pennsylvania highlights the state's historical role in the development of the American correctional system, as it was a pioneer in prison reform. Today, while the prison is more of a historical site, it has served as an example of early reformative ideas in corrections, maintaining a noteworthy place in American history.