This rectangular tower house, now heavily cloaked in ivy and reduced to fragments, preserves only its western wall stretching about eight metres and a small portion of its southern wall. The structure, built from thin stone flags and small blocks with roughly squared corner stones, rises three storeys high despite its deteriorated state. Three modest, flat-arched windows puncture the western wall; two at ground level and one on the first floor, offering glimpses into what was once a fortified residence.

The castle’s documented history begins in 1535 when William Eustace acquired the property, though the structure itself likely predates this ownership. By the 17th century, Colonel Edward Wogan had taken up residence here, representing the kind of military gentleman who often occupied such defensive towers during Ireland’s turbulent Stuart period. These tower houses were typical of the Irish landscape from the 15th to 17th centuries, serving as both domestic dwellings and defensive strongholds for minor gentry and prosperous merchants.

Today, the castle shares its space with the mundane realities of modern farming; a concrete shed leans against the southern wall, creating an unusual juxtaposition of agricultural practicality and medieval architecture. The western wall shows a slight base batter, a defensive architectural feature designed to deflect projectiles and strengthen the structure’s foundation. Despite its poor preservation, Blackhall Castle remains an evocative ruin, its ivy-wrapped stones holding stories of the Anglo-Norman and Gaelic families who once called these walls home.