a prison/jail
United States Penitentiary, Leavenworth, Kansas.
The correct spelling is "penitentiary" (a prison).
Fox River Penitentiary in Joliet, Illinois
He's in the Ohio State Penitentiary.
A prison or penitentiary
as a Federal Penitentiary: 29 years
A prison operated by the State for the incarceration of (usually) felony offenders.
It was filmed in the Tennessee State Prison.
...the prison is on the island.
Season 1 was Fox River Penitentiary at Joliet, IL and Season 3 was Sona Federal Penitentiary at Panama City.
The criminals boarded the prison ship that would take them across the waters to the main penitentiary.