Relaxing — deep, immediate muscle release.
Loaded with major ions — the essential minerals (Ca, Mg).
Dense, salty water — you float without effort.
Kokubunji Onsen offers siliceous mineral bathing in the city of Kokubunji in western Tokyo Prefecture, whose name—meaning 'national temple town'—preserves the memory of the ancient Musashi Kokubunji, one of the provincial temples established throughout Japan in 741 CE by Emperor Shomu to protect the state during the Nara period, whose temple bell and foundation stones are preserved as tangible links to the moment when imperial Buddhism became the organizing spiritual principle of the Japanese state. The thermal facility serves a community that balances this ancient historical identity with the contemporary indie music and culture scene associated with the 'Kokubunji-kei' (Kokubunji style) of Japanese underground music, centered on the city's vintage record stores and small live music venues. The ancient provincial temple history, the indie cultural scene, and the warm mineral waters of Kokubunji's neighborhood onsen reflect a city that quietly bridges Japan's Nara-period past and its contemporary underground arts culture.