Relaxing — deep, immediate muscle release.
Loaded with major ions — the essential minerals (Ca, Mg).
Soft water — natural, classic buoyancy.
Komae, the smallest city by area in Tokyo Metropolis on the southern bank of the Tama River bordering Kawasaki, is a compact riverside community of over 80,000 residents whose charming Tama River waterfront, traditional kofun burial mound heritage — Komae has one of the highest concentrations of ancient burial mounds in the entire Tokyo metropolitan area — and quiet residential atmosphere create an appealingly intimate urban spa setting. Komae Onsen Tokyo draws on sodium and bicarbonate thermal waters from the geological resources of the Tama River alluvial zone, providing warm restorative baths in this small but historically rich riverside city whose kofun burial mound heritage reflects the deep history of human settlement along the ancient Tama River corridor. The Komae kofun burial mound complex and local history museum, the Tama River cycling and walking path along the scenic river levee, and the easy Odakyu Line access to both Shinjuku and Odawara create a compact and surprisingly historically rich spa destination along the Tama River in Tokyo Metropolis.