Open-air outdoor bath
Enclosed indoor bathing area
Dry heat sauna room
Cold water plunge bath, typically used after sauna
Uses natural hot spring water
Free-flowing water, not recirculated
Private bath available for day-use visitors or hotel guests to reserve
Private onsen bath in guest rooms, for overnight guests only
Shared bathing area for all genders
Allows entry with visible tattoos
Welcomes children and families
Restaurant or dining open to visitors (not just hotel meal plans)
Shower, wash stations, soap and shampoo provided
Towels available to rent or borrow
Relaxation space for after bathing
On-site or nearby parking available
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.
Drinking SpringA tap with drinkable onsen water in the park on the outskirts of Arima. The water is cool, slightly carbonated, with a light sulfur taste, somewhat reminiscent of either Borjomi or some Essentuki (haven't drunk either for a long time, so I don't really remember). This park will be almost the first thing to greet you in Arima if you come on foot, descending the hiking trail from Mount Rokko. If you arrive by ropeway, you'll have to make a small detour on the way to the center. Photos are from the internet and correspond to the description. 2026.05.16
