Though not far from the Free City itself, Castle Greyhawk might as well be a world away for all the resemblance it bears to the city of the same name.  the caste is inhabited, ruled by one Herzog Akitrom the Merely Worried.  He rules benignly over the several hundred citizens of the Keep.  No one rules over the teeming labyrinth, filled with monsters, that lies under the castle.

Cairn Hills