Cornwood is the dimension that Bender, Fry, and Leela go into in the movie Bender's Game. It is also the home of Calculon, who later gets seriously injured by a falling drawbridge. One of the towers resembles Bender's head (since he is, after all, the king). It only appears in Bender's Game, and is the only castle besides Wipe Castle that's mentioned. The map of Cornwood is a map of Middle Earth (from Lord of the Rings) flipped horizontally.