Sunspear is the seat of House Martell and the capital of Dorne, southern-most of the Seven Kingdoms, located in the far south-east 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.