Bangor, town, Ards and North Down district, Northern Ireland. It lies on the southern shore of Belfast Lough (inlet of the sea). About 555 ce, St. Comgall founded a monastery at Bangor, which became a celebrated seat of learning. Incursions by Danes in the 9th century destroyed Bangor. It was partially rebuilt by St. Malachy in the 12th century, and part of his stone church remains. Bangor is now a seaside resort with a small harbour serving as the headquarters of the Royal Ulster Yacht Club. Bangor is one of Northern Ireland’s main tourist destinations, its principal attractions including Bangor Marina and North Down Museum. Bangor is the administrative centre for the Ards and North Down district. It has some light industry. Pop. (2001) 58,388; (2011) 61,401.