the very heart of the former Tokyo City, yet is one of the least populated wards. It is occupied by many major Japanese companies and is also the seat of the national government, and the Japanese emperor. It is often called the "political center" of the country. Akihabara, known for being an otaku cultural center and a shopping district for computer goods, is also in Chiyoda. To the west of the special wards, Tokyo Metropolis consists of cities, towns, and villages that enjoy the same legal status as those elsewhere in Japan. While serving as "bed towns" for those working in central Tokyo, some of them also have a local commercial and industrial base, such as Tachikawa. Collectively, these are often known as the Tama area or Western Tokyo. The far west of the Tama area is occupied by the district (gun) of Nishi-Tama. Much of this area is mountainous and unsuitable for urbanization. The highest mountain in Tokyo, Mount Kumotori, is high; other mountains in Tokyo include Takanosu (), Odake (), and Mitake (). Lake Okutama, on the Tama River near Yamanashi Prefecture, is Tokyo's largest lake. The district is composed of three towns (Hinode, Mizuho and Okutama) and one village (Hinohara). The Tokyo Metropolitan Government has designated Hachiōji, Tachikawa, Machida, Ōme and Tama New Town as regional centers of the Tama area, as part of its plans to relocate urban functions away from central Tokyo. Tokyo has numerous outlying islands, which extend as far as from central Tokyo. Because of the islands' distance from the administrative headquarters of the Tokyo Metropolitan Government in Shinjuku, local subprefectural branch offices administer them. The Izu Islands are a group of volcanic islands and form part of the Fuji-Hakone-Izu National Park. The islands in order from closest to Tokyo are Izu Ōshima, Toshima, Nii-jima, Shikine-jima, Kōzu-shima, Miyake-jima, Mikurajima, Hachijō-jima, and Aogashima. The Izu Islands are grouped into three subprefectures. Izu Ōshima and Hachijojima are towns. The remaining islands are six villages, with Niijima and Shikinejima forming one village. The Ogasawara Islands include, from north to south, Chichi-jima, Nishinoshima, Haha-jima, Kita Iwo Jima, Iwo Jima, and Minami Iwo Jima. Ogasawara also administers two tiny outlying islands: Minami Torishima, the easternmost point in Japan and at the most distant island from central Tokyo, and Okinotorishima, the southernmost point in Japan. Japan's claim on an exclusive economic zone (EEZ) surrounding Okinotorishima is contested by China