This compact tower house, which appears on the Down Survey maps of 1655-6, forms part of a larger fortified complex that once included a bawn (a defensive courtyard). The castle itself is remarkably well preserved; a nearly square limestone structure measuring roughly 6.6 metres north to south and 6.1 metres east to west, rising through four storeys with walls averaging 85 centimetres thick. A distinctive semi-circular stair tower projects from the southeast corner, containing a clockwise spiral staircase lit by strategically placed arrow loops.

The building’s defensive architecture tells a story of medieval Irish fortification techniques. The original pointed-arch doorway, now only visible from outside where it meets an abandoned 18th or 19th century farmhouse, was positioned at the eastern end of the south wall for security. Today, visitors enter through a later addition; a red-brick arched doorway cut through the western wall, probably where a window once stood. Each floor level was carefully designed with narrow loops and windows for both defence and light, with embrasures that widen internally to maximise illumination whilst minimising vulnerability. The spiral staircase provides access to all levels through a series of doorways, some with elegant pointed arches, others with plain square heads, reflecting different periods of construction or renovation.

Evidence of the castle’s original gatehouse survives on the western wall’s exterior, where well-dressed quoin stones mark the eastern jamb of what was once a defended gate arch. Above this, blocked doorways reveal access points to a narrow guard chamber that would have allowed defenders to protect the entrance. The battlements, though now reduced and topped with a modern corrugated roof, still show traces of their original drainage system with gutter holes on the eastern wall. A string course running beneath the battlement line and an armorial stone now fixed to the adjacent farmhouse hint at the status of the castle’s medieval occupants. Just 75 metres northwest, the remains of an earlier ringfort suggest this location has been strategically important for centuries, long before the tower house was constructed.