Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
SoufreSulfuresSulfates
Takeda Onsen Hanasuigetsu, in the city of Taketa, Oita Prefecture, draws sulfurous thermal water at 43°C. Visitors can use an indoor bath, an outdoor bath (rotenburo) and a sauna.
Insider tip — Taketa's Oka Castle ruins are among Japan's most dramatically sited — stone walls rising from sheer volcanic tuff cliffs above the Ono River gorge, immortalized in composer Rentaro Taki's timeless song 'Kojo no Tsuki' (Moon over the Ruined Castle). Hanasuigetsu (Flower-Water-Moon) is perfectly named for this castle town of poetic associations. Oita's thermal waters here are wonderfully sulfurous, warming both body and spirit before the contemplative evening walk through the castle ruins by moonlight.