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Tansan Hot Spring Source

炭酸泉源たんさんせんげん

Other
Arima Onsen
Kansai·Hyogo
you.co.jp

Day Use

Yes

Bathing & Water

Natural onsen water

Uses natural hot spring water

Outdoor BathNo

Open-air outdoor bath

Indoor BathNo

Enclosed indoor bathing area

SaunaNo

Sauna room of any kind

Cold BathNo

Cold water plunge bath, typically used after sauna

Bathing Arrangements

Private BathNo

A private bath you can reserve for yourself or your group

Room OnsenNo

Private onsen bath in guest rooms, for overnight guests only

Mixed BathingNo

Shared bathing area for all genders

Policies & Services

TattooNo

Allows entry with visible tattoos

KidsNo

Welcomes children and families

DiningNo

A restaurant or dining room open to visitors, not only meals for overnight guests

WashingNo

Shower, wash stations, soap and shampoo provided

TowelsNo

Towels to rent or borrow at the desk

Rest AreaNo

Relaxation space for after bathing

ParkingNo

On-site or nearby parking available

炭酸泉源

Tansan-sengen
炭
Carbonated
+ Iron-bearing
Cold mineral source · 18°CCold mineral
Known good for
  • Circulationtired legs
  • Recoveryfatigue, stress

A carbonated cold-mineral spring carrying free carbon dioxide along with iron. At a source temperature of roughly 18 °C it falls below the 25 °C cold-mineral threshold and is reheated for bathing. The signboard notes that people once mixed sugar into this carbonated water to drink it as soda, and that the source gave its name to the local 'tansan senbei' crackers.

Explore the water

Highlights

Drinking Spring

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AN
Andrey Novikov
4 months ago

Tansan gensen, Arima Onsen A drinking-water tap with onsen water in a park on the outskirts of Arima. The water is cool, slightly carbonated, with a faint hydrogen sulfide taste, a bit like Borjomi or maybe some kind of Essentuki (I haven't had either in a long time, so I don't really remember anymore). This park will be one of the first things you come across in Arima if you arrive on foot, coming down the hiking trail from Mount Rokko. If you come by ropeway, you'll have to make a small detour on the way to the center. The photos from the internet match. 2026.05.16

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Onsen Oni

Last updated October 5, 2026