The castle itself is not that large, but it's tallest spire can be seen from far away. The castle has a spacious throne room, many living quarters, an underground treasury, dungeons, a magnificent dining hall, the king's chambers: all the sort of rooms a castle needs. It is very well fortified with a moat and drawbridge, as well as some rather impressive gatling guns mounted on the roofs to keep back any airships if an invasion were to happen.