Caerleon Castle is first mentioned in 1086. It survives as a motte, or castle mound, 65m in diameter and 30m high, having a summit diameter of 25m. A stone structure of some form occupied the summit, the foundations of which were being robbed out in 1799. Access to the castle was via a bridge and twin-towered gate at the foot of the mound. The motte was landscaped in 1847. A ruinous round tower (NPRN 275973), adjacent to the Hanbury Arms (Nprn37017), is thought to mark the southern extent of the castle bailey, indicating an enclosure in the region of 150m by 50m.

Sources: Knight 1963 (Monmouth Ant. 1), 71-2;
Davies 1993 (AW 33), 20-22;

J.Wiles, RCAHMW, 3 February 2005