riginally this castle was a motte and bailey castle built several years after the Norman Conquest by Philip de Braose, one of William the Conqueror's Norman followers. The castle was built on high ground in the town of Builth in the Welsh Marshes overlooking an important crossing of the River Wye. The castle was attacked by the Welsh and over time the castle's defences were improved. In 1277 King Edward I ordered that the castle was to be rebuilt. A new stone castle was constructed on the site. Nothing remains on the site above ground now as the castle was badly damaged by fire in the late sixteen hundreds and the remains of the castle were used for building material in the town. It is thought that castle had a stone keep on the motte and this was surrounded by a curtain wall with 6 towers. Although there is not much to see at the castle now it is possible to visit the site and walk over the mounds and ditches.