Hook Head is the oldest lighthouse in Ireland, and one of the oldest in Europe still operating. In the 5th century St Dubhan set up a fire beacon on the headland as a warning to mariners. After his death his monks kept the beacon going for another 600 years. Between 1170 and 1184 the Normans built the present lighthouse. It was built from local limestone and burned lime mixed with ox’s blood. Even today traces of the blood-lime mix can be seen coming through the paintwork. The walls are 9 to 13 feet thick and 80 feet above the ground.

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