| 1．Tsushima Island ・Tsushima Strait, Korea Strait |
| Tsushima Island (Japanese: 対馬, Hepburn: Tsushima) is an island of the Japanese archipelago situated in-between the Tsushima Strait and Korea Strait, approximately halfway between Kyushu and the Korean Peninsula.[3][4] The main island of Tsushima, once a single island, was divided into two in 1671 by the Ōfunakoshiseto canal and into three in 1900 by the Manzekiseto canal. These canals were driven through isthmuses in the center of the island, forming "North Tsushima Island" (Kamino-shima) and "South Tsushima Island" (Shimono-shima). Tsushima also incorporates over 100 smaller islands, many tiny. The name Tsushima generally refers to all the islands of the Tsushima archipelago collectively.[5] Administratively, Tsushima Island is in Nagasaki Prefecture. |
| Wikipedia |
| 2．Asō Bay |
| Asō Bay (浅茅湾, Asō-wan) is a large, complex inlet that nearly cleaves in two the Japanese island of Tsushima. The bay is notable for its ria coastline, with many peninsulas and various small islands found in close proximity to the shore.[1] It forms part of the Iki-Tsushima Quasi-National Park.[2] Pearls are cultured and Japanese amberjack are farmed in its waters.[3] |
| Wikipedia |
| 3．Kaneda Castle |
| Kaneda Castle (金田城, Kaneda-jō) was a Korean-style fortress located in Tsushima, Nagasaki prefecture. Kaneda castle has been designated as being of national special significance.[1] |
| Wikipedia |
