Tintagel Castle (grid reference SX051889) is a castle currently in ruins found on Tintagel Island, located near the village of Tintagel in Cornwall, England, UK. The ‘Island’ is in fact a peninsula subject to erosion by the sea. The site was perhaps originally a Roman settlement, though the remains of the castle that stand today date from the 13th century. The castle is traditionally linked to the legend of King Arthur and as such it is currently a popular tourist site run by English Heritage.