Anglesey /ˈæŋɡəlsi/ (Welsh: Ynys Môn ) is an island off the north west coast of Wales. Two bridges span the Menai Strait, connecting it to the mainland: the Menai Suspension Bridge designed by Thomas Telford in 1826 and the Britannia Bridge. Anglesey is also the name given to a county which includes the island of Anglesey itself, Holy Island on which the town of Holyhead stands, and various minor uninhabited islets.
The Norse name Anglesey came into existence in the 10th century and was later adopted by Anglo-Norman occupiers during the invasion of Gwynedd.
Almost three quarters of the inhabitants are Welsh speakers and Ynys Môn, the Welsh name for the island, is used for the UK Parliament and National Assembly constituencies. With an area of 714 square kilometres (276 sq mi), Anglesey is the largest Welsh island, the sixth largest surrounding Great Britain and the largest in the Irish Sea.
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