Yunomine Onsen, Hongu, Tanabe, Wakayama Prefecture
Tsuboyu, Yunomine Onsen
The first choice if the goal is the World Heritage bathing experience itself. Choose the public bath or Watarase Onsen if you want a larger bathing area, a longer visit or less chance of waiting.
Check before bathing
- Opening hours
- 06:00–21:00; last admission 20:30. Open in 30-minute turns; closure days may vary. Take a numbered ticket at the counter and expect to wait when busy.
- Tattoo policy
- The current first-party information reviewed does not confirm a tattoo policy. Ask before visiting.
Spring & water temperature
- Spring-source temperature
- 92°C on the shared public-bath and Tsuboyu information page.
- Bathing temperature
- Not published.
- Spring source
- Yunomine Onsen; the current information page does not identify Tsuboyu's individual source.
- Spring classification
- Sulfur-bearing sodium bicarbonate spring.
- pH
- Not published in the current material summarized here.
- Flow rate
- Not published in the current material summarized here.
- Water handling
- Tsuboyu is a small bath in a natural rock basin and a registered World Heritage bathing site. Current pages do not publish water addition, heating, circulation or disinfection conditions for each visit.
Bathing indications
The tourism association lists general bathing indications for Yunomine Onsen. World Heritage status and spring classification are not treatment guarantees.
The current information page does not specify pool treatment for each 30-minute session.
Adult admission is ¥800. Each turn is limited to 30 minutes. Afterward, the ticket also allows one additional visit to the general or medicinal bath.
How to read a bath profile
Spring-source temperature and actual bathing temperature are kept separate. Each score is shown independently for comparison rather than collapsed into one overall score.
