Montgomery Castle is an impressive stone enclosure fortress of five successive wards, built along a narrow ridge. The first ward has been lost but built into a house is the base of a D-shaped flanking tower of the second ward. The third ward is guarded by a rock-cut ditch, a twin-towered gatehouse and a thick curtain wall, flanked by solid round turrets. The fourth ward is the main ward with a strong rock-cut ditch and cylindrical twin-towered gatehouse, the curtain wall is flanked by D-shaped flanking towers, one containing the well. The fifth ward is much lower on the point of the ridge. A mile north is Hen Domen Castle and 7 miles north is Powis Castle.