Pembridge Castle, originally called Newland Castle, is a late 12th century to early 13th century Grade I listed former border castle located approximately northwest of Welsh Newton in Herefordshire, England. The castle sits on a 36 m x 27 m plot of land and is surrounded by a moat. It is constructed of ashlar, sandstone and rubble walls. The curtain wall surrounding the castle is 1.4 m thick. The earliest part of the castle, thought to be the keep, is the four story round tower on the western corner. The internal diameter of the tower is 7.5 m and the internal rooms of the tower are 5 m wide.