Holy Island, Anglesey Rhoscolyn, and Four Mile Bridge. Around of the Anglesey Coastal Path is on Holy Island. Peripheral islands and stacks include North Stack, and South Stack, with its famous lighthouse. Before – and even after – the construction of lighthouses, the cliffs and jagged rocks of the island were a great danger to sailors. Holy Island, Anglesey Holy Island (, 'the island of (Saint) Cybi') is an island () on the western side of the larger Isle of Anglesey, Wales, from which it is separated by a narrow, winding channel. It is called "Holy" because of the high concentration of standing
Anglesey of Gwynedd. Apart from a devastating Danish raid in 853 it remained the capital until the 13th century, when improvements to the English navy made the location indefensible. Anglesey was also briefly the most southern possession of the Norwegian Empire. After the Irish, the island was invaded by Vikings — some of these raids were noted in famous sagas (see Menai Strait History) — and by Saxons, and Normans, before falling to Edward I of England in the 13th century. Anglesey (together with Holy Island) is one of the thirteen historic counties of Wales. In medieval times, before the conquest