The three-storey rectangular building, with its distinctive caphouse, stands about 50 metres northwest of the ruins of a 14th century de Wogan castle, which was later absorbed into a 17th century fortified house and an 18th century mansion. The site’s strategic importance is underscored by its proximity to two surviving sections of the Pale Boundary Ditch, the historic frontier between English-controlled territory and Gaelic Ireland, located roughly two miles north-northwest and 1,300 metres south-southwest.

The structure measures 10.5 metres north to south and 7.1 metres at its widest point, built from coursed masonry with roughly dressed corner stones. At its heart lies a tall, round-arched passageway running east to west, though much of the western arch has since vanished. This central corridor, 3.2 metres wide, was flanked by two distinct spaces: a small, poorly preserved guardroom to the south and a larger, better-maintained tower to the north. The northern tower retains many fascinating features, including a spiral staircase tucked into its southwest corner, accessed through a narrow, round-headed doorway. The ground floor, later converted into a carriage house and stables, features a broad red-brick archway inserted into the eastern wall, while evidence of the original vaulted ceiling survives only as scar lines on the walls.

The upper floors reveal the building’s defensive and domestic functions through their architectural details. The first floor is illuminated by a broad, round-headed window in the east wall, whilst the second floor boasts an elegant twin-light, ogee-headed window, a style typical of late medieval Irish architecture. A small garderobe chamber, essentially a medieval toilet, branches off from the spiral stairs at second-floor level, complete with its own window for ventilation. The stairs originally continued up to a small rectangular caphouse that provided access to the now-destroyed battlements, though this uppermost section is currently inaccessible due to the deteriorated condition of the top steps. Historical sketches from the late 19th and early 20th centuries document features that have since been lost, including a chimney stack, sections of bawn walls extending north and south, and the intact western arch of the central passageway, offering tantalising glimpses of the structure’s former completeness.