Desert Fortress of Imperious 

(An Ancient Blue Dragon)

This Fortress was built 120 years ago By a Pirate Lord named Castigilian. I t was meant to symbolize his legitimate claim to the Throne of Arcadia, though he was only a Bastard son of a Bastard son. 10 years after Castigilian. finished his Fortress it was taken from him by Imperious, who has ruled the Great Sand Sea from it since.