This impressive four-storey tower house, built from roughly coursed limestone rubble, dates to the late fifteenth or early sixteenth century. The Civil Survey of 1654-6 recorded it as ‘a bawne and castle in repaire’, with William Cantwell listed as proprietor in 1640. The tower measures 10.5 metres north to south and 7.5 metres east to west, with walls 1.7 metres thick, and features a two-storey turret along its north wall. A concerning crack along the eastern side currently threatens the northeastern angle of the structure.

The castle’s defensive features reveal the turbulent times in which it was built. The original entrance at the south end of the east wall led through a lobby with a murder hole directly above, whilst machicolations over the doorway and a bartizan on the southwest angle provided additional protection. Inside, a pointed vault spans the first floor, with timber floors used throughout the rest of the building. The interior contains numerous architectural details typical of its period: ogee-headed windows, wall cupboards, fireplaces, and a garderobe chute. Perhaps most intriguing is a secret chamber accessed through a rectangular opening in the floor of a third-floor recess; this small, barrel-vaulted room with wicker centring sits directly beneath a mural passage.

The castle is enclosed by a well-preserved bawn wall featuring circular towers at the northeast and southwest angles, plus a bartizan at the northwest corner. These fortifications appear to represent two distinct building phases; the wall was likely constructed alongside the tower house initially, then partially rebuilt in the seventeenth century when the angle towers were added. The three-storey southwest tower contains gun loops of various shapes (square, round, and cruciform) at every level, whilst the northeast tower was converted into a summerhouse or gazebo during the late eighteenth or nineteenth century, complete with plastered interior and altered windows. A sheela-na-gig, a medieval stone carving of a female figure, was once located in the tower house’s south wall but has since been lost.