Perched majestically atop the rugged cliffs at the northern edge of the Mizen Peninsula, Dunlough Castle, also known as Three Castle Head, commands a striking view over the vast expanse of the Atlantic Ocean in southwestern Ireland. Founded in 1207 by Donagh O’Mahony, it is one of Ireland’s oldest fortresses, showcasing the enduring legacy of Norman architecture and dry stone masonry. The history of the castle is rich. When the first Norman settlers arrived in Ireland in 1169, the O’Mahonys, though in decline, still held considerable power as the princes…