Candleston Castle is a 14th-century fortified manor house, in ruins since the 19th century. It is .75 miles (1.21 km) southwest of Merthyr Mawr, former Glamorgan, Wales, now Bridgend county borough and just .75 miles (1.21 km) northwest of Ogmore Castle, separated by the River Ogmore. Candleston's original long and narrow rectangular structure lay across the western end of a low narrow promontory, suggesting a defensive position.