This one does not. The tower at Cork Great, also known as Cork Abbey, north of Bray, has vanished entirely, swallowed somewhere between the historical record and the shoreline. What remains is the outline of an absence, a numbered slot in a defensive chain that no longer has anything to show for itself.

Construction of the Dublin-area Martello towers, squat circular fortifications built to resist a potential Napoleonic invasion, began in 1804 under the supervision of Colonel Benjamin Fisher of the Royal Engineers. By December 1805, all towers in the network were armed and complete. The towers and batteries south of Dublin were numbered from one to sixteen, though the count was somewhat notional: there were only fourteen actual towers, since two locations had batteries without towers, and some towers sat close to adjacent batteries. Cork Great was Tower No. 3 in this scheme, sited on a low cliff overlooking the beach, roughly half a mile north of Tower No. 2. A mid-nineteenth-century plan recorded it as being surrounded by a glacis, a sloped earthwork embankment designed to deflect cannon fire and complicate assault. The tower appears on Duncan's map of 1821 and on the first edition Ordnance Survey six-inch map of 1843, so it was certainly standing well into the nineteenth century. By 1864, however, there were reports that heavy seas and gales had been found shaking it in its foundations, and coastal erosion at this stretch of shore is the most likely explanation for its eventual disappearance.

There is nothing to see at the site today in the conventional sense. The coastline north of Bray has continued to shift, and no masonry survives. For those interested in what once stood here, Taylor's 1816 map of the environs of Dublin documents the position of both the battery and the tower, and the first edition OS maps offer a further fix on the location before it was lost. The interest lies less in visiting than in tracing the gap, following the numbered sequence of towers along the coast and arriving at the point where the chain simply skips.