The Dogo Onsen Honkan (Dogo Onsen Main Building) is not just a public bathhouse, but a true symbol of Matsuyama and one of the most significant cultural landmarks in Japan. This onsen (hot spring) is considered one of the oldest in the country; its history spans over a thousand years according to some records—and up to three thousand years according to legend. Built in 1894 during the Meiji era, the building is a jewel of traditional wooden architecture and holds the status of an Important Cultural Property.
The exterior of the three-story building looks more like an intricate castle or an ancient temple than a public bathhouse. Its complex structure, with numerous corridors, staircases, and rest rooms, creates a maze-like atmosphere, immersing visitors in the world of old Japan. This unique architecture and authenticity attract tourists from all over the world. In the evening, when the lights come on, the building takes on an especially magical appearance.

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The heart of Dogo Onsen is, of course, its healing hot springs. The water here is alkaline and soft, making it particularly pleasant for bathing. Visitors can choose from several baths, including the historical "Kami-no-yu" (Bath of the Gods) and "Tama-no-yu" (Bath of the Spirits). Additionally, the complex features a special Yushinden wing—the only bathhouse in Japan built exclusively for the Imperial Family, highlighting the special status of this location.
Visiting the Dogo Onsen Honkan is a unique opportunity to touch the history and culture of the country. The site is famous not only for its waters but also for its literary heritage: it is mentioned in ancient texts like the "Man'yoshu" and in Natsume Soseki's classic novel "Botchan." It is also said that this building inspired Hayao Miyazaki when creating the bathhouse in the famous anime "Spirited Away."