Codnor Castle was a Norman earth and timber enclosure fortress or fortified manor house, founded by William Peveril. In the 13th century, Henry de Gray founded the stone castle, by adding a citadel on the angle of a large inner bailey curtain wall. On the site of the platform, stands a ruinous first floor hall house, with fragments of lodgings built against a curtain wall, flanked by rectangular turrets. The two wards are divided by a curtain wall, flanked by a twin towered gatehouse and round angle towers. In the lower ward, is a length of high curtain wall with a projecting garderobe turret and a 17th century farmhouse, with earlier masonry. Sadly the site has been disturbed by ironstone quarrying, leaving only fragments of the surrounding wet ditches. 5 miles south-east is Greasley Castle and 9 miles south-west is Duffield Castle.