An ancient structure, the Citadel is in reality the original home of The Academy of Arcane Science. The mage faction was ousted when Lucan came to power, and forced to adopt a new home in North Freeport. Attesting to the massive size of the structure, apparently there are areas of the Citadel of which even the Overlord and his most trusted allies are or were unaware, as the Foci of the Academy was able to utilize a forgotten portal during the theft of Soulfire, as documented in "The Case of the Ursa Rhym."