Anglesey Sqn Search and Rescue Helicopters, both units providing employment for about 500 civilians. RAF Valley is now the headquarters of 22 Sqn Search and Rescue. There is a wide range of smaller industries, mostly located in industrial and business parks, especially at Llangefni and Gaerwen. These include an abattoir and fine chemical manufacturing, as well as factories for timber production, aluminium smelting, fish farming and food processing. The island is also on one of the major routes from Britain to Ireland, via ferries from Holyhead, off the west of Anglesey on Holy Island, serving Dún Laoghaire and Dublin Port. Much
Admiralty Arch, Holyhead Admiralty Arch, Holyhead Admiralty Arch, located in Holyhead, Anglesey, was built in 1824 to mark the end of Thomas Telford's A5 road. The arch was designed by Thomas Harrison and its main purpose was to commemorate the visit of King George IV of the United Kingdom in 1821, when he set sail from Holyhead on the royal yacht, on a state visit to Ireland. At the London end of the A5, stands the similar and larger Marble Arch. Funded through public subscription the structure took two years to complete and was made of stone quarried at Red Wharf Bay on