Tsushima, Nagasaki
Tsushima (対馬市, Tsushima-shi) is an island city grouped in Nagasaki Prefecture, Japan. It is the only city of Tsushima Subprefecture and it encompasses all of Tsushima Island, which lies in the Tsushima Strait north of Nagasaki on the western side of Kyushu, the southernmost mainland island of Japan.