Kojiro Onsen
神代温泉こうじろおんせん
Iron-rich countryside bath on a 1950 oil-well spring
Day Use
YesIrregular closures; call ahead before visiting.
Adults ¥600; elementary school children ¥300
Bathing & Water
Uses natural hot spring water
Open-air outdoor bath
Enclosed indoor bathing area
Sauna room of any kind
Bathing Arrangements
Shared bathing area for all genders
Policies & Services
Allows entry with visible tattoos
A restaurant or dining room open to visitors, not only meals for overnight guests
Shower, wash stations, soap and shampoo provided
Towels to rent or borrow at the desk
On-site or nearby parking available
Highlights
Drinking SpringAbout
A small day-use public bath in the Toyama countryside, running on a spring found in 1950 during oil exploration. The iron-rich water turns a deep reddish-brown as it oxidizes, leaving the bath milky and opaque. The old building keeps a genuinely retro feel. Tattoos are welcome.
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Last updated September 19, 2026