Built as a tower house, likely by the Shanahan family, the structure passed into the hands of Richard Nugent by the 1640s. The Nugent-Humble family, his descendants, would maintain ownership of the castle through to the 18th century, marking nearly a century of continuous possession during a turbulent period in Irish history.

Today, only fragments of the original structure survive; the north wall remains intact alongside portions of the western and southern walls, the latter reinforced by an external buttress. The castle’s footprint measures approximately 9.5 metres east to west and 5 metres north to south, modest dimensions typical of Irish tower houses. While the original entrance has been lost to time, the ground floor retains a round-headed embrasure in the north wall, measuring 1.1 metres wide and 1.56 metres high, with a narrow light opening that would have provided minimal illumination to the interior.

The castle originally rose four storeys, though the upper levels are now largely ruined. The first floor, covered by an east-west barrel vault, features a small light in the west wall and the remnants of a window with built-in seats in the north wall, suggesting this space served as the main living quarters. Though the main staircase no longer survives at ground level, traces of a newel stair at the southwest corner indicate how residents once moved between the upper floors. The third floor’s western wall partially survives, but the second and fourth floors have left little evidence of their original features or purposes.