Athclare Castle, Athclare, Co. Louth

What catches the eye first is not scale, tower houses of this sort are common enough across Louth, but the survival of small decorative details on the window openings, carving that would have been an expensive flourish on what was otherwise a strictly functional building. Arrow loops still puncture the north, south and east walls, narrow defensive slits designed for firing weapons while leaving the archer exposed to only a sliver of return fire, and one on the first floor of the south elevation has been treated to unusually decorative surrounds rather than left plain.

The core structure dates to around 1550, raised by the Barnewell family as a rectangular tower house with a tower set to the east, the standard arrangement for a fortified residence built to project authority and provide refuge in a period when Louth's landowners needed both. A century on, around 1650, the building was extended in a plainer style, and it is this later phase that gives the castle its present stocky, uneven profile, the seventeenth-century addition reads as noticeably more restrained than the earlier work, without the same appetite for ornament. The domestic evolution continued long after the age of tower houses had passed: a two-storey house was built directly against the castle's west end, and to the north a stable yard grew up around 1840, forming a proper courtyard of single and two-storey outbuildings with red brick door and window surrounds, a sign that the site kept being reworked to suit whoever was living there rather than being frozen at any one moment.

Approach the castle and the mixture of periods is immediately legible in the walls themselves: random rubble stone throughout, but pointed arch openings with dressed limestone voussoirs at the main door contrasting with later square-headed openings finished in smooth render, some fitted with uPVC rather than timber. The parapet over the tower is corbelled, meaning the stonework steps outward course by course to support the wall-walk above, a detail worth pausing over alongside the string course that runs beneath it. The chimneystack, in red brick, is a visibly modern addition from around 1970, a small reminder that a building like this rarely finishes being built.