Gotham State Penitentiary

Gotham State Penitentiary is a fictional prison featured in comic books published by DC Comics. It relates to the Batman line of comic titles and is located in the fictional city of Gotham City. This is basically the place where all of Gotham's criminal element get incarcerated, usually after having failed to match wits against Batman. This of course assumes that the criminal in question isn't a complete loony, at which point they'll find themselves booted off to Arkham Asylum.