Osaka is in the heart of the Kansai region in central Japan, about 350km (215mi) west of Tokyo. The city is divided into northern and southern areas. Kita (north), also known as Umeda, is the city's main business and administrative centre. Its biggest train stations, JR Osaka and Hankyu Umeda, are the gateways to Kōbe and Kyoto. Minami (south) is the city's entertainment district and contains the hyperactive shopping and nightlife areas of Namba and Shinsaibashi. In between is the peaceful green Nakanoshima Park, on a small island bounded by the Dojimagawa and Tosaborigawatwo rivers. Osaka-wan, the bay area in the west, is home to a number of attractions, including the spanking-new Universal Studios and the excellent Osaka Aquarium.