Cobh ( /ˈkoʊv/ KOHV, Irish: an Cóbh) is a seaport town on the south coast of County Cork, Ireland. Cobh is on the south side of Great Island in Cork Harbour. Facing the town are Spike Island and Haulbowline Island. On a high point in the town stands Cobh (St Colman's) Cathedral, one of the tallest buildings in Ireland and seat of the diocese of Cloyne.