Honshu (本州, Honshū?, literally "Main Province") ([hoɴꜜɕuː] ( listen)) is the largest island of Japan. The nation's main island, it is south of Hokkaido across the Tsugaru Strait, north of Shikoku across the Inland Sea, and northeast of Kyushu across the Kanmon Strait. It is the seventh largest island in the world, and the second most populous after Indonesia's Java island.
It has a population of 103 million in 2005, (98,352,000 as of 1990; in 1975 it was 89,101,702), mostly concentrated in the available lowlands, notably in the Kantō plain where 25% of the total population reside in the Greater Tokyo Area, which includes Tokyo and Yokohama, Kawasaki, Saitama and Chiba cities. Most of the nation's industry is located along the belt running from Tokyo along Honshu's southern coastal cities, including Kyoto, Osaka, Nagoya, Kobe, and Hiroshima, part of the Taiheiyo Belt.
It is located directly between the Kantō region and the Kansai region and includes the major city of Nagoya as well as along Pacific and Sea of Japan coastlines, extensive mountain resorts, and Mount Fuji.
The region is the widest part of Honshū and the central part is characterized by high, rugged mountains. The Japanese Alps divide the country into the Pacific side, known as the front of Japan, or Omote-Nihon (表日本?) sunny in winter, and the Sea of Japan side, or Ura-Nihon (裏日本?), the back of Japan, snowy in winter.