Yashima Castle was once one of the Korean-style mountain castles built by the Yamato dynasty in 667 in the area stretching from Tsushima and Kyushu to the coast of the Seto Inland Sea, to prepare for an invasion by the Chinese Tang and Korean Silla Kingdoms. It was an ancient mountain castle built on a mesa to take full advantage of the natural terrain. The castle walls span approx. 7-kilometers, with about 10% of the wall believed to have been built artificially. Since 2007, the city government of Takamatsu has been working to preserve and maintain the ruins of Yashima Castle’s gate. With major preservation work now completed, the Yashima Castle gate ruins were opened to the public on March 19, 2016.
| Address | Yashima Higashimachi, Takamatsu, Kagawa 761-0111 |
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