The Duloc Castle is the official residence of the Royalty of Duloc and their servants.
The castle is disproportionately giant comparing to everything in the city of Duloc. The castle seems to be a rectangular shaped building with four smaller towers on top of it, and it has a few windows. There is also a court yard where the tournament for the chance to rescue Fiona was held.
There are many rooms inside the castle. Rooms seem to have white colored walls and floors with blue colored curtains and banners. Known Rooms include,
- Bed chambers of Lord Farquaad.
- Dungeon, where the interrogation of Gingy was held.
- Dining hall