Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
BicarbonatesSodiumCalcium
Nanto Onsen is a restorative hot spring facility in Nanto city, a broad inland municipality of southern Toyama Prefecture that encompasses several historically significant areas including the UNESCO World Heritage Gokayama district, the Johana woodcarving town, and the Inami cedar forest crafts village. The bicarbonate thermal waters provide soothing warmth and skin-beneficial alkaline properties, offering a comfortable base for visitors exploring the remarkable cultural and natural diversity concentrated within this single sprawling city. The surrounding landscapes of river gorges, mountain forests, and traditional rural communities give the onsen a strong sense of authentic Japanese provincial character.
Insider tip — Nanto Onsen serves the administrative center of the Nanto basin, surrounded by the rice-terrace landscapes and traditional farmhouses of central Toyama. Bicarbonate waters here are well suited to quiet recuperation after hiking the nearby Hakusan Shirakawa-go White Road. The spring facilities are built for local residents rather than visitors, giving access to an authentic rural bath culture. Winter visits reveal the basin under deep snow, with outdoor baths offering a textbook contrast of steam and silence.
