The Holyhead Breakwater Lighthouse stands on the Holyhead Breakwater outside the Welsh port of Holyhead, Anglesey. The structure, which was completed in 1873, was most likely designed by Victorian civil engineer, John Hawkshaw, after he took control of Holyhead harbour works in 1857. The lighthouse was the last major building completed on the breakwater.The three-storey black and white tower, unlike many contemporary lighthouses, is square.