Built by John Briscoe in 1588, this rectangular structure measures 7.5 metres north to south and 9.8 metres east to west, with walls an impressive 1.5 metres thick. The tower’s defensive architecture speaks to the turbulent times of its construction, featuring a prominent base batter with reinforced corners, numerous musket holes, and two large square bartizans projecting from the southwest and northeast corners at third floor level, each supported by external corbels.

Entry to the castle was through a two-centred doorway on the western wall, though only half of this original entrance survives today, displaying punch-dressed jambs and a yett hole where the iron gate once hung. Above, a small square machicolation protected defenders as they monitored arrivals below. Just inside the doorway, a spiral staircase in the northwest corner provided access to all upper floors, where wooden flooring once divided the interior spaces, though none remains today. The first floor likely served as the main living quarters, evidenced by a fireplace built into the north wall, whilst the second floor contained more private chambers including a garderobe in the southeast corner with an outlet through the eastern wall, and a small guardroom in the southwest angle featuring a decorative double twin-light ogee-headed window; these ogee windows appear to be later additions to the original structure.

The third floor functioned as the primary defensive level, providing access to both bartizans and a mural passage within the eastern wall, allowing defenders to move safely whilst monitoring potential threats. Above this, remnants of a high-pitched eastern gable and wall-walk indicate where sentries once patrolled. A large rectangular gable-ended house from the 17th century was later attached to the northern end of the western wall, its partially destroyed fireplace and external chimney stack on the western gable suggesting domestic expansion during more peaceful times. Archaeological testing conducted in 2004 near the castle and its associated earthworks revealed no additional features or finds, leaving the tower house itself as the primary testament to this site’s defensive heritage.