North Stack North Stack North Stack (Welsh: Ynys Arw, meaning "rugged island") is a small island situated just off Holy Island on the north-west coast of Anglesey. North Stack can also refer to the headland opposite the island. This is the site of a redundant fog warning station, comprising a number of buildings, including the Trinity House Magazine, built in 1861, where shells for the warning cannon were stored. These buildings now house a bird watching observatory, giving a view of South Stack lighthouse across Gogarth Bay, and the studio of artist Philippa Jacobs. The Precambrian quartzite cliffs of this headland, including
Anglesey Anglesey Anglesey (; ) is an island situated on the north coast of Wales with an area of . Anglesey is by far the largest island in Wales and the seventh largest in the British Isles. Anglesey is also the largest island in the Irish Sea by area, and the second most populous island (after the Isle of Man). The ferry port of Holyhead handles more than 2 million passengers each year. The Menai Suspension Bridge, designed by Thomas Telford in 1826, and the Britannia Bridge span the Menai Strait to connect Anglesey with the mainland. Anglesey, one of the