Tintagel Castle
Tintagel Castle in Cornwall, UK served as the inspiration for Castle Wyvern. While not much of the castle is left now, much like Wyvern Castle, its remains rest atop an enormous cliff overlooking the ocean. In legend, Tintagel Castle was the home of Ulric Pendragon and the birthplace of King Arthur, before he was taken away by Merlin to be raised in secret.