Tamagawa Onsen Ichijikawa
Semboku, Akita
136 radioactive-water places mapped worldwide. Find where to soak — and where to stay nearby.
Hotels in Japan →See the springs ↓Radon Rn-222 is a noble gas naturally present in some waters from granitic rocks. These Alpine springs are surrounded by a long spa tradition, where people come above all for warmth and relaxation.
A noble gas from granitic rocks. These springs are visited above all for warmth and the Alpine spa tradition.
Wellness and cultural information — no therapeutic claims. If in doubt, ask a healthcare professional.
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