The castle, measuring 8.6 by 8 metres, is situated north of the stable yard belonging to the main house, which was built in 1737 and lies about 100 metres to the south. An artificial lake, part of the designed landscape surrounding Bonnetstown House, sits immediately northwest of the old tower. Though much weathered by time, with its western corner and most of the northwest wall now missing, the structure still reveals fascinating architectural details from its medieval construction.

The tower house once featured a vaulted ground floor, though no floor levels above this vault remain today. The western angle that has since collapsed originally housed the stairway, and only a single jamb of the entrance doorway has survived the centuries. The defensive nature of the building is evident in its remaining features; a loop window pierces the northeast wall, its embrasure splaying both internally and externally to allow defenders a wide field of view whilst remaining protected. Another window can be found in the southeast wall, though an opening at the southern end of this same wall appears to have been broken through at some later date, perhaps when the tower’s military importance had long since faded.

Historical records indicate that by 1559, the castle belonged to Robert Shee, though it had previously been held as Ormonde property. This change of ownership reflects the complex political landscape of 16th century Ireland, when control of such fortified structures often shifted between Anglo-Norman families and their descendants. Today, while the tower house may be a shadow of its former self, it remains an evocative reminder of the area’s layered history, standing as a medieval counterpoint to the Georgian elegance of the nearby Bonnetstown House.