The ruins of a 16th-century castle are now a scenic historical site with many walking paths. Though there is no information provided in English, tourists can still enjoy exploring the area and take in the beauty of the surrounding nature.
Wikipedia https://en.wikipedia.org/wiki/Yamanaka_Castle
Official Website http://www.mishima-kankou.com/play/seiroku/yamanakajyo.html
Address Japan
Coordinates 35°9'23.073" N 138°59'32.642" E