The rectangular structure, measuring approximately 13.3 metres north to south and 17.3 metres east to west, survives only as wall footings with walls roughly 1.5 metres thick. At the northwest corner, the remains of what may have been a corner tower can be traced, spanning 7 metres by 5 metres. The site overlooks a stream immediately to the north, where the natural slope of the hill provided defensive advantages to its medieval inhabitants.

The castle’s builders clearly chose this location with defence in mind. Beyond the natural protection offered by the hillock’s northern slope, traces of what might be defensive ditches or fosses can still be detected on the eastern and western sides. Earthworks immediately south of the main structure suggest the presence of a bawn, the fortified courtyard typical of Irish tower houses, which would have provided additional security and space for livestock and other activities essential to castle life.

Whilst the surface remains are too fragmentary to definitively classify the building’s medieval origins, the layout and construction techniques strongly suggest this was indeed a tower house with an associated bawn. These fortified residences were particularly common in Ireland from the 15th to 17th centuries, built by both Gaelic Irish and Anglo-Norman families as symbols of power and practical strongholds in often turbulent times. The site was documented in the Archaeological Inventory of County Offaly in 1997, with updates based on more recent archaeological research.