Shades of Penitentiary parts I-III and every other prison movie I could think of short of Jailhouse Rock, all leavened with Ye Olde Generick Dongeon Fantasye. Just think of it as StoneWhatTheHell.
Some entries are part bold italic and part not; the bold italic is the part that survives if the prison is merely a historic ruin being occupied by something else.
OSR: The Three Estates
16 hours ago