道後温泉Dogo Onsen

Dōgo Onsen (道後温泉) is a hot spring in the city of Matsuyama, Ehime Prefecture on the island of Shikoku, Japan. Dōgo Onsen is one of the oldest onsen hot springs in Japan, with a history stretching back over 1,000 years. The springs are mentioned in the Man'yōshū (written c. 759), and according to legend Prince Shōtoku (574–622) used to partake of the waters.

from Dōgo_Onsen (Wikipedia) CC BY SA 3.0

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Ehime