Although the initial dire request from mariners for a lighthouse on Rathlin Island was made in 1827, East Rathlin Lighthouse in Northern Ireland was not built until March 1856.
There were differing opinions on the need for a lighthouse by the Irish Commissioner of Northern Lights and the Corporation for improving Dublin Port.
East Rathlin Lighthouse or Altacarry Lighthouse is unique in that it has two beacons.
The taller light flashed and shorter light was fixed. The lighthouse’s two beacons were meant to distinguish them from nearby lighthouses.