Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Mibu Hot Spring in Minabe town, Wakayama prefecture, draws chloride-rich geothermal waters in the 'kingdom of the plum blossom' — the Minabe-Tanabe area that produces 60% of all Japanese plum (ume) and where 1 million plum trees bloom every February in Japan's most extensive ume orchard landscape. The coastal Wakayama location places Mibu Hot Spring within the Kumano Kodo UNESCO World Heritage pilgrimage route territory, connecting thermal bathing to one of Japan's most sacred pilgrimage networks that has drawn Buddhist and Shinto devotees for over 1,000 years. The combination of Japanese plum gastronomy — including umeboshi pickled plums, plum wine, and plum vinegar — with Kumano pilgrimage culture and coastal Kii Peninsula onsen tradition creates a layered Wakayama wellness experience.
Insider tip — Mibu Hot Spring lies in the ume plum country of southern Wakayama, where Minabe town produces roughly 20 percent of Japan's entire plum harvest. The sodium-chloride waters are warming and slightly saline, popular among day-trippers from Osaka who combine a bath with visits to winter plum orchards in full bloom by late February. The Kumano Kodo pilgrimage trail passes nearby, adding cultural depth to any visit.