This lighthouse is the most southerly of all Trinity House Lighthouses, being the only one outside the United Kingdom. It stands 49 metres above the High Water mark at the southernmost end of the Rock of Gibraltar. The foundation stone was laid by Governor Sir Alexander Woodford on the 26th April, 1838, with the assistance of the Masonic Order in Gibraltar and was opened on 1 August 1841, attracting over 2,000 onlookers from the surrounding countryside. It was fully automated in February 1994 and its loom can be seen over a distance of 27 kilometres.