Meelick Martello Tower, Clonahenoge, Co. Offaly

Most Martello towers along the Irish coast were designed for a single piece of artillery on a circular platform; this one, cam-shaped in plan and raised on a central stone pier that runs the full height of the structure, was built with a trefoil gun platform to take a trio of guns firing across the open river. The battered walls, sloping inward as they rise and roughly sixty feet wide at the base, are worked in hammerdressed ashlar, giving the tower the same squat, tapered profile familiar from Martello defences elsewhere, but on a scale and with a gun arrangement that sets it apart from the standard single-gun coastal type.

The tower was built around 1811, at a moment when the British administration in Ireland was seriously alarmed by the prospect of a French landing. An invasion launched from Spain or Portugal had been feared in 1809, and by 1810 there was intelligence that Napoleon was weighing up moving a substantial force from Holland against Ireland or Scotland. The response along the Shannon was part of a wider shift toward permanent fortification of the river, and this tower shares its design with two others on the south shore of Galway Bay, at Finavarra and Aughinish, which appear to have gone up in the same short building campaign. Inside, the ground floor held stores and a powder magazine, while the timber-floored first storey above provided living quarters for the garrison, reached by an entrance set at that upper level rather than at ground level, a common Martello precaution against direct assault. Two staircases, built symmetrically into the thickness of the wall, climb from either side of that living floor up to the rear of the gun platform, where the three artillery pieces stood ready to sweep the river below. The setting itself changed decades later, when the navigation at Meelick was altered in the 1840s with the cutting of a broad new channel and the construction of Victoria Lock; the reworked river banks left the ground in front of the tower more open, sharpening rather than softening the field of fire the guns had been built to command.