Sunspear is the capital of Dorne, southernmost of the Seven Kingdoms, located in the far southeast of the continent on the Summer Sea. It consists of a strong, fortified castle and a town that sprawls around it. It is a town built largely of mud and straw. The town's largest structure is Spear Tower, a 150-feet structure with a pinnacle of shining steel.
The castle was the seat of House Martell.