Rathlin O'Birne
Rathlin O'Birne (Gaeilge: "Reachlainn Uí Bhirn") is an island located to the south west of the district of Glencolumbkille, County Donegal, Ireland, and 2 km west of Malin Beg. Lighthouse. Rathlin O'Birne lighthouse went into operation on 14 April 1856. In 1974, a Radioisotope thermoelectric generator was installed, making it home to Ireland's first nuclear powered lighthouse. A road, with a cut stone wall on both sides, runs from the beach to the lighthouse to protect the lighthouse keepers as they made their way across the island.