Kobe (神戸市 Kōbe-shi?) is the sixth-largest city in Japan and is the capital city of Hyōgo Prefecture on the southern side of the main island of Honshū, approximately 500 km (310.69 mi) west of Tokyo. Kobe is a prominent port city with a population of about 1.5 million. The city is located in the Kansai region of Japan and is part of the Keihanshin (京阪神 Keihanshin?) metropolitan area along with Osaka and Kyoto. Keihanshin in turn is part of the Taiheiyō Belt, a megalopolis.