This rectangular tower house, measuring roughly 11.65 by 8 metres, rises four storeys high with an attic level topped by a modern slate roof. Built sometime after 1600, it originally belonged to Edmund Roche, who leased it to Edward Gratix in 1640. Following the 1641 rebellion, the Roches of Fermoy forfeited the property, which passed to John Nettles and eventually to the Musgrave family in 1780 when Nettles’ grandson sold the estate.

The castle’s entrance, a pointed doorway with its original yett (iron gate) still intact, opens into a lobby on the north wall. From here, visitors would have accessed the ground floor chamber and a newel staircase in the northeast corner that spirals up through all levels. Each floor reveals different architectural features; the second floor boasts two-light rectangular windows with square hood-mouldings, whilst the third floor includes an ogee-headed window and access to a machicolated structure projecting over the east and south walls. The tower’s defensive capabilities are evident throughout, with gun loops strategically placed in the walls and crenellations along the parapet, including a rectangular machicolated turret at the northwest corner equipped with six gun loops.

The construction shows typical tower house characteristics, with limestone quoins, a slight base batter, and floors originally supported by corbels in the east and west walls rather than vaulting. Many of the segmental-arched embrasures still display evidence of wicker centering used during construction, though several are now covered in plaster. The tower remains remarkably complete, with tall square chimney stacks rising above the north and east walls, and various chambers including guardrooms, antechambers, and living spaces distributed across its multiple levels. Original features like slop-stones, fireplaces with wooden mantles, and timber bracers in nib-holes provide glimpses into daily life within this formidable structure.