Vanuatu, officially the Republic of Vanuatu, is an island nation located in the South Pacific Ocean. The archipelago, which is of volcanic origin, is some 1,750 kilometres (1,090 mi) east of northern Australia, 500 kilometres (310 mi) northeast of New Caledonia, west of Fiji, and southeast of the Solomon Islands, near New Guinea. It has a parliamentary republic government type and its capital city is called Port-Vila (on Efate).