Anglesey the island. The highest six are Holyhead Mountain, ; Mynydd Bodafon, ; Mynydd Llaneilian, ; Mynydd y Garn, ; Bwrdd Arthur, ; and Mynydd Llwydiarth, . To the south and south-east the island is separated from the Welsh mainland by the Menai Strait, which at its narrowest point is about wide. In all other directions the island is surrounded by the Irish Sea. It is the 51st largest island in Europe, and just five square kilometres smaller than Singapore. There are several small towns scattered around the island, making it quite evenly populated. The largest are Holyhead, Llangefni, Benllech, Menai
Holyhead Mountain variety of birds that nest along the cliff faces near South Stack. Views from the summit are extensive, especially to the west, where the Wicklow Mountains in Ireland can often be seen across the Irish Sea on clear days. Birds that nest here include Atlantic puffins, stonechats and oyster catchers, and grey seals can be seen offshore during the summer. Holyhead Mountain Holyhead Mountain ("Mynydd Tŵr" in Welsh: from "(pen)twr", meaning "tower") is the highest mountain on Holy Island, Anglesey, and the highest in the county of Anglesey, north Wales. It lies about two miles west of the town of