Though historian Carrigan mistakenly placed this castle in the neighbouring Killtallaghan townland in his 1904 writings, the site actually sits about 40 metres to the northeast. Known locally by its Irish name Sean Chloch, meaning “Old Building”, the castle once stood within an impressive oval bawn measuring 43 metres northwest to southeast and 35 metres southwest to northeast. This defensive enclosure, defined by a 1.4 metre high scarp and an external fosse that’s 9 metres wide and 1 metre deep, still shows traces of the county stream Aughatharra winding through its western section.

Today, visitors will find little more than the remnants of a gatehouse in the southeastern portion of the bawn. The structure, originally about 9 metres long and 7.4 metres wide, consists of two parallel walls that once formed an imposing entrance. The northeast wall stands with an L-shaped return at its southeastern end, whilst the southwest wall has lost both ends over time. The entrance width remains a mystery; if the southwest wall had a matching L-shaped return, the gateway would have measured just 1.3 metres across, though it could have been as wide as 2.4 metres without such a feature. A displaced stone block near the former southwest wall, complete with a rectangular depression, appears to be a spud-stone that once held the castle gate in place.

Archaeological evidence suggests a room once existed above the entrance, with traces of vault springing visible at about 2 metres height. The gatehouse walls, measuring between 1.85 and 2.05 metres thick, demonstrate the substantial construction typical of medieval Irish fortifications. Though time has reduced this once-formidable stronghold to scattered ruins, the site remains an evocative reminder of the castle’s strategic position overlooking the surrounding pastureland, where it once commanded views across the Kilkenny countryside.