Kagawa Prefecture (香川県, Kagawa-ken) is located on Shikoku island, and the capital is Takamatsu. Kagawa comprises the northeast corner of Shikoku, bordering Ehime Prefecture on the west and Tokushima Prefecture on the south, with a coastline on the Seto Inland Sea facing Okayama Prefecture and the Kansai. The Sanuki Mountains run along the southern border. Kagawa is currently the smallest prefecture, by area, in Japan. Kagawa is a relatively narrow prefecture located between the mountains of Shikoku and the sea. As of April 1, 2012, 11% of the total land area of the prefecture was designated as Natural Parks, namely Setonaikai National Park and Ōtaki-Ōkawa Prefectural Natural Park.