The Steel Sky Fortress of Shander Khan

Imagine a mighty fortress, measuring nearly a half a mile on a side, with a castle in the center that stands 250 feet tall. Now, make the whole thing out of enchanted steel, set it on a round disk of earth a mile across and 300 feet thick and set it to floating in the sky at an altitude of about 3 miles and then cloak it so that it's invisible and silent. THAT is the Steel Sky Fortress of Shandar Khan.

At any given time, the fortress has roughly 3,500 beings living on it, many of them human. There are soldiers, slaves, apprentice mages and support folk. The fortress has room for horses and other riding animals, which are used by the soldiers when a raid is called for. Sewage and other wastes are processed magically back into fresh water and fuel for the furnaces.

Shandar Khan generally allows the fortress to travel randomly on the winds, but is fully capable of ordering it to go anywhere he wants. Since the merest sight of it is terrifying to most sentient creatures, he seldom needs to let loose his troops.

Most of the time, Khan is studying and plotting in his castle and leaves the day to day operations to his right hand man, Evross Xorr, a damned powerful Wizard in his own right.