 Loughor Castle is a ruined , medieval fortification located in the town of Loughor , Wales . The castle was built around 1106 by the Anglo @-@ Norman lord Henry de Beaumont , during the Norman invasion of Wales . The site overlooked the River Loughor and controlled a strategic road and ford running across the Gower Peninsula . The castle was designed as a motte and bailey , with the motte being the castle's raised platform. nobody knows why the castle was built here.
The castle was besieged by Llywelyn the Great in 1107, and fell to him after a long siege. In 11