The Haulbowline Lighthouse will celebrate its 200th birthday in 2024. This magnificent 34 metre (112 ft) high 19th-century lighthouse stands at the entrance to Carlingford Lough. Besides marking the boundary between the lough and the open sea, it also marks the border between Ireland and Northern Ireland. The lighthouse was designed to help mark dangerous rocks at the entrance to the lough to assist ships entering from the Irish Sea. In summer, the Carlingford Ferry organises night excursions to the lighthouse.