Black Head Lighthouse, Murrooghtoohy North, Co. Clare

There is no keeper's cottage clustered around it, no cluster of outbuildings; just a single square-plan structure, two storeys tall, topped with a riveted metal-framed glass lantern housing and a plain iron railing. It reads less as a monument than as a piece of functional engineering left in place, which is more or less what it is.

The lighthouse was built in 1936, the work of Robert McDonald of Galway, at a point in the twentieth century when this stretch of coast still needed a reliable warning light for vessels rounding the headland. Its construction is straightforward and utilitarian: rendered walls rising from a concrete plinth, a flat concrete roof, and a timber matchboard door of the kind found on outbuildings and modest houses of the period rather than anything more architecturally ambitious. The lantern itself, enclosed in its metal-framed glazing and ringed by a tubular iron balustrade, sits directly on the roof rather than beneath a separate gallery, giving the whole building a compact, almost improvised profile compared to the taller masonry towers built elsewhere on the Irish coast in earlier centuries. There is nothing decorative about it, and that plainness is itself informative: by the 1930s, lighthouse design in Ireland had moved away from the elaborate stone towers of the nineteenth century towards smaller, cheaper, concrete structures that could be built quickly and maintained with minimal fuss.

Reaching it involves a concrete path and a run of steps up to the plinth, a detail that suggests the building was always meant to be walked to rather than driven up to, keeping it slightly apart from the road even now. Anyone tracing the line of small Atlantic lighthouses along this coast will find Black Head a useful counterpoint to the grander towers further south and west: less photogenic, perhaps, but a clear record of how lighthouse building in Ireland had changed by the mid-twentieth century, favouring economy and function over the visual statement-making of an earlier era.