Bytham Castle, © Richard Carter and licensed for reuse under cc-by-sa/2.0

The castle is thought to be of early Norman origin, but little is known of its history, certainly after 1394. Excavations have shown a large keep with a great cylindrical tower 18 yards in diameter with curtain walls and outworks including water defences drawn from the neighbouring beck and local springs. The earthworks, situated on a hill above the village, are very visible but nothing of the stonework is above ground.