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.

A prison, correctional facility, detention center, jail (gaol in dated British English), penitentiary (sometime used in American English) or remand centre is a facility in which inmates are forcibly confined and denied a variety of freedoms under the authority of the state as a form of punishment after being convicted of crimes.

Prisons are most commonly used within a criminal justice system: people charged with crimes may be imprisoned until they are brought to trial; those pleading or being found guilty of crimes at trial may be sentenced to a specified period of imprisonment.

Besides their use for punishing civil crimes, jails and prisons are frequently used by authoritarian regimes.

The Americas, also collectively called America, encompass the totality of the continents of North America and South America.

Together they make up most of the land in Earth's western hemisphere and comprise the New World.

A prison cell, also known as a jail cell or lock-up, is a small room in a prison or police station where a prisoner is held.

Cells greatly vary for their furnishing, hygienic services, and cleanness both across countries and based on the harshness level of the detention that the prisoner has been convicted to.