The castle complex consists of a substantial rectangular bawn, measuring approximately 120 metres north to south and 50 metres east to west, constructed from limestone rubble laid in rough courses. At its heart sits a fortified house, positioned slightly off centre on an earthen platform that’s defined by a curving scarp. About 200 metres to the east south east, visitors can spot the earthwork remains of ‘Forte Edward’, adding another layer to this area’s defensive history.

The bawn walls tell their own story of centuries past, with the eastern wall standing as the best preserved section at 3.65 metres high. Here you’ll find an entrance flanked by projecting piers, though curiously lacking the typical draw bar hole one might expect. Just south of this entrance, remnants of what appears to be a guard house can still be traced. The western wall, reaching heights of around 4 metres in places, features its own entrance directly opposite the fortified house, complete with a draw bar hole that confirms its original width of just over 3 metres. Evidence of broken steps within the wall’s thickness suggests there was once access to a wall walk, whilst later additions include fireplaces and chimney flues from buildings constructed against the external face.

Though time hasn’t been entirely kind to Ardmayle, with the northern wall largely replaced by modern walling and several corners lost, enough remains to appreciate its original scale and defensive capabilities. The surviving embrasure at the northern end of the western wall, likely designed for a gun loop, hints at the castle’s adaptation to gunpowder warfare. Set against the backdrop of rolling pastureland with the River Suir flowing nearby, this fortified complex offers a tangible connection to the turbulent times when such defences were essential for survival in rural Ireland.