View Castle - View the Flying SuperFortress.
Main Hall - You're looking at it.
Dragon Hall - Visit the abode's of the Dragon Court adventurers.
Tomb - View a the crystal on the tomb of the unknown adventurer.
Dreadnaught - Visit the crypt of Dreadnaught.
Dread Knights - Info on the Order of Dread Knights.
Steel Dragons - Info on the hybrid Steel Dragons.
Misc - Extra stuff.