Dungeon

A dungeon is a dark, slimy place that is sort of like a jail or prison. You usually find them in old castles or in forts or perhaps even the lair of some ne'er-do-well supervillain. Dungeons are usually found in locales relating to the Medieval and Renaissance time periods, but aren't frequently found in modern settings. The best dungeons are equipped with all sorts of bad-ass torture devices. At the very least, they usually have some manacles attached to chains bolted to the wall.

In film

 * Tower of London: Historically, the Tower of London in the city of London has also served as a dungeon prison. The Norman Bishop of Durham, Ranulf Flambard, converted the Tower of London into a prison in 1100. In the film, the Duke of Gloucester, Richard III uses the dungeons in a systematic weeding out of his enemies by way of his club-footed executioner, Mord.