A wonderful maze of a place, Oystermouth Castle began its life in the 12th century. It was built by William de Londres, who also owned Ogmore Castle.
The castle was destroyed twice by the Welsh, and the De Londres line ended in 1215 when the Welsh retook the Gower.
The Barony of the Gower was then given to John de Braose by Henry II in the 13th century and with it Oystermouth castle. The de Braose's not only rebuilt Oystermouth in stone but increased its size, extravagance, and defensive capabilities.
It was one of the last DeBraos's, Aline de Braose, who revamped the chapel and put it on the map as one of the finest examples of a castle chapel in South Wales. It was her marriage to John de Mowbray that passed the castle and the Lordship of Gower to the de Mowbrays. She is said to haunt the castle to this day.
It fell into decline in the middle ages, but was restored once more in the 19th century, and again in the early 21st. Upon completion of these restorations, Oystermouth was opened to the public.
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