What remains today is primarily the ivy-covered north corner of what was once a rectangular tower house, measuring roughly 7 metres northwest to southeast and 5 metres northeast to southwest. This surviving corner rises to what would have been the third-floor level, an impressive height considering centuries of neglect and weather have reduced the rest of the structure to foundations hidden beneath grass and soil.

The most notable architectural feature still visible is a spiral stone staircase, about 0.9 metres in diameter, built into the corner walls. Two windows that once illuminated this staircase remain partially intact, each featuring a flat rear arch, though their openings are now broken. When surveyed in the 1940s, the tower was recorded as standing approximately 9 metres high and square in shape, though it was noted even then as lacking any distinctive architectural features. The castle’s defensive outer structures have fared worse; no trace remains of the courtyard and thick enclosing wall documented by historian William Shaw Mason in 1816.

This castle was a stronghold of the O’Hara family, one of the prominent Gaelic families who controlled territories in County Sligo during the medieval period. Like many Irish tower houses, it would have served both as a defensive fortification and a residence, its now-vanished courtyard likely containing domestic buildings and storage facilities essential for daily life and times of siege. The castle’s position overlooking the river would have provided both strategic defensive advantages and control over local river crossings and trade routes.