Nakamura Onsen

Nakamura Onsen takes its historic name from the former city of Nakamura — now renamed Shimanto — whose greatest treasure is the Shimanto River, celebrated as Japan's last major undammed river and its 'last clear stream,' a characterization that has made the 196-kilometer Shimanto one of the most beloved natural symbols of Japanese environmental heritage and a pilgrimage destination for kayakers, fishermen, and nature lovers seeking an encounter with a major Japanese river in something approaching its original, unmodified state. The river's traditional chinchikurin low-water crossings — wooden bridges that submerge deliberately during floods rather than resisting the current — embody the Shimanto's philosophy of living with natural forces rather than against them, a principle that has preserved both the bridges and the river's ecology through centuries of seasonal flooding. The onsen's siliceous mineral waters invite guests to soak in a city whose identity is defined by its extraordinary river, offering thermal bathing as the natural complement to days spent paddling, fishing, or simply sitting on the Shimanto's clear banks watching the current flow toward the Pacific.