The Castle was constructed many years ago by the wizard Xagyg Yragerne. Known as “The Mad Archmage,” Xagyg ruled over the Free City of Greyhawk from the Castle for approximately the next 100 years, after which he abandoned the Castle and mysteriously disappeared.
Over the centuries, the Castle’s three towers decayed into ruin. The main tower is called the “Tower of Xagyg,” and the two lesser towers the “War Tower” and the “Tower of Magic.”
An extensive dungeon complex lies below the towers.