Wŏnsan (Korean pronunciation: [wʌn.san]) is a port city and naval base located in Kangwŏn Province, North Korea, along the eastern side of the Korean Peninsula, on the Sea of Japan (East Sea) and the provincial capital. The port was opened by occupying Japanese forces in 1880. Before the 1950–1953 Korean War, it fell within the jurisdiction of the then South Hamgyŏng province, and during the war it was the location of the Blockade of Wŏnsan. The population of the city was estimated at 329,207 in 2013. Notable people from Wŏnsan include Kim Ki Nam, diplomat and Secretary of the Korean Workers' Party. The city has several major factories.