Mumbles. The original castle was founded in the early 12th century by William de Londres of Ogmore and was constructed of ringwork and bailey. In the 13th century, the castle was the principle residence of the de Braoses, the lords of Gower (their other main residence was Swansea Castle), and most of the structure remaining today originates from this period. King Edward 1 is recorded to have visited the castle in December 1284. The present day remains are well preserved and the battlements offer commanding views over Swansea Bay. There is a small entry fee.