Ajaccio is the capital of the island and largest city , as well as capital of the southern Corse - du - Sud department .
Bastia is the second city of the island and capital of the northern Haute - Corse department .
Ajaccio is the capital of the island and largest city , as well as capital of the southern Corse - du - Sud department , while Bastia is the second city of the island and capital of the northern Haute - Corse department .