Hook Lighthouse
The Hook Lighthouse (; also known as Hook Head Lighthouse) is a building situated on  Hook Head at the tip of the Hook Peninsula in County Wexford, in Ireland. It is one of the oldest lighthouses in the world and the second oldest operating lighthouse in the world, after the Tower of Hercules in Spain. It is operated by the Commissioners of Irish Lights, the Irish Lighthouse Authority, it marks the eastern entrance to Waterford Harbour. The current structure has stood for 846 years as of 2018.
Holyhead Mail Pier Light
Holyhead Mail Pier Light on Salt Island, Anglesey, is an inactive lighthouse which was built by the civil engineer John Rennie in 1821. It is probably the second oldest lighthouse in Wales, after Point of Ayr Lighthouse and is the last of three lighthouses located on the island.