Akiu Onsen, Sendai, Miyagi
Ichitaro-no-Yu at Tenshukaku Natural Park
A garden-side bath for visitors who want an indoor cypress pool and outdoor baths, with a garden stroll included in the usual visit. Weekday hours are short, and the monthly closure rule has exceptions in August and October.
Check before bathing
- Opening hours
- Weekdays 10:00–17:00; last admission 16:00. Adult admission for high-school students and older is ¥900. Closed on the third Friday of the month except August and October, and on December 31 and January 1.
Spring & water temperature
- Spring-source temperature
- Not published.
- Bathing temperature
- No fixed temperature published.
- Spring source
- Ichitaro-no-Yu spring; the exact source name and extraction point are not published on the current main pages.
- Spring classification
- Low-salinity, weakly alkaline, high-temperature spring; a complete ionic classification has not been confirmed.
- pH
- 7.7.
- Flow rate
- Not published.
- Water handling
- Natural spring water is used in the cypress indoor bath and two garden outdoor baths. Pool-by-pool dilution, heating, circulation and disinfection details are not fully published.
Admission includes a stroll through the historic garden grounds; do not assume that this applies to other baths in the park.
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.
