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Takasaki Tenjin no Yu
3.8★ · 1039 Google ratings · Takasaki, Gunma · 天然温泉 高崎天神の湯
✓ Natural hot-spring water✓ Free-flowing source water✓ Outdoor bath✓ Rest area✓ Restaurant
Before you go
Can you bathe here?
Price
¥1,000Standard admission is around 1000 yen, with variations reported: 850 yen for the 6-10am morning bath, 950 yen on weekdays, and 1100 yen on weekends/holidays.stated by 2 visitors · May 2026 – Jul 2026
Hours
06:00–09:00from the facility listing
Tattoos
Not known · call aheadno policy stated in the 36 recent reviews we read
Watch out
Cold bath
A large, deep cold plunge is a highlight for most reviewers, but one recent visit found the water visibly dirty alongside a roach sighting.
stated by 6 visitors · Apr 2026 – Aug 2026Rest area
A 2nd-floor rest area exists, closing around 20:00, and is off-limits to children.
stated by 3 visitors · Mar 2026 – May 2026The bath
What you’ll find
An aging but well-regarded roadside super-sento near Takasaki IC where every bath, indoor and outdoor, runs on unheated 46-55C iron-tinted sodium chloride kakenagashi spring water, with an outdoor sauna and a large deep cold plunge, though recent reviews report declining maintenance, a roach sighting, and one report that tattoos (even taped over) get you ejected.
Outdoor bath
✓ YesMultiple outdoor baths including a mineral-crusted rock bath are widely praised.stated by 8 visitors · Apr 2026 – Aug 2026
Indoor baths
2One reviewer counts 2 indoor baths (though notes some uncertainty on the outdoor count).stated by 1 visitor · Apr 2026
Sauna
✓ YesAn outdoor sauna (roughly 90C, 18-person) with TV is present, though it lacks sauna mats on some visits.stated by 5 visitors · Apr 2026 – Jul 2026
Cold bath
✓ YesA large, deep cold plunge is a highlight for most reviewers, but one recent visit found the water visibly dirty alongside a roach sighting.stated by 6 visitors · Apr 2026 – Aug 2026
Rest area
✓ YesA 2nd-floor rest area exists, closing around 20:00, and is off-limits to children.stated by 3 visitors · Mar 2026 – May 2026
Restaurant
✓ YesAn on-site restaurant exists but keeps limited hours (closed Mondays, lunch-only mid-week).stated by 2 visitors · Apr 2026 – May 2026
The water
Free-flowing (kakenagashi)
✓ YesMultiple reviewers confirm every bath, indoor and outdoor, runs on true kakenagashi spring water with no recirculation.stated by 5 visitors · Jun 2026 – Aug 2026
Spring type
Sodium chloride (iron-tinted, reddish-brown)The spring is a reddish-brown, iron-tinted sodium chloride type.stated by 2 visitors · Apr 2026 – Jul 2026
Source temperature
54°CMost reviewers cite a source temperature around 54-55C, though one review states 46C.stated by 3 visitors · Apr 2026 – May 2026
Practical
What to bring
Soap & shampoo
✓ ProvidedShampoo, conditioner and body soap are provided at the washing stations.stated by 2 visitors · Jun 2026 – Jul 2026
Lockers
✓ Coin returnedShoe lockers use a refundable 100 yen coin system tied to a front-desk key exchange.stated by 2 visitors · May 2026 – Jul 2026
Guide
What visitors add
Outdoor bath & sauna
There is a spacious open-air bath (at least four distinct reviews, Apr–Aug 2026) and a sauna located in the outdoor area (two reviewers note the outdoor placement; one details ~18-person capacity at around 90°C with TV and no auto-louly). The outdoor cold plunge is reported around 16°C by one reviewer, and two reviewers call it large/deep. One reviewer reports cloth sauna mats provided; another reviewer reports no sauna mats — conflicting accounts (1 vs 1).
stated by 8 visitors · Apr 2026 – Aug 2026The water
The water is brown/tea-colored — at least five distinct reviews (Apr–Aug 2026) describe brown or reddish-brown water, one calling it a sodium chloride spring. Reported source temperatures conflict: one reviewer says 54°C from a 1,300 m bore, another says 55°C, a third says 46°C.
stated by 7 visitors · Apr 2026 – Aug 2026Price
Reported admission (2026): one reviewer says 950 yen weekdays as of July 2026 with prepayment; one reviewer says weekends rose by a further 100 yen; one reviewer says 1,100 yen on Sat/Sun. Morning-bath (6–10 am) price conflicts: one reviewer (Jun 2026) reports 850 yen, another (May 2026) reports 1,000 yen.
stated by 5 visitors · Apr 2026 – Jul 2026Water handling
The baths are free-flowing from the source (gensen kakenagashi); at least five distinct reviews (Apr–Aug 2026) say so, one specifying all tubs are kakenagashi without added heating.
stated by 5 visitors · Apr 2026 – Aug 2026Staffing
The facility is staffed with a front desk; at least three distinct reviews (May–Aug 2026) mention reception or staff interactions (opinions on service quality conflict: three of the quoted reviews praise staff, while one reviewer complains staff do not intervene against rule-breaking and another criticizes service).
stated by 5 visitors · May 2026 – Aug 2026Day-use visits
One reviewer (Jul 2026) reports the former 22:00–6:00 overnight pass has been discontinued and that on their 2026 visit closing time was 1:00 am; two distinct reviewers (May and Jun 2026) report a morning-bath slot of 6:00–10:00 am. One reviewer (May 2026) notes the rest area closes at 20:00.
stated by 4 visitors · May 2026 – Jul 2026Timing
When to go
Quietest Tuesday around 6:00; busiest Saturday around 19:00. Measured by Google over past visits, not a forecast.
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Quiet Busy
| Day | Hours |
|---|---|
| Monday | 06:00–09:00 |
| Tuesday | 06:00–09:00 |
| Wednesday | 06:00–09:00 |
| Thursday | 06:00–09:00 |
| Friday | 06:00–09:00 |
| Saturday | 06:00–09:00 |
| Sunday | 06:00–09:00 |
Practical
Plan your visit
📍 329-3 Nakaomachi, Takasaki, Gunma 370-0001
🚃 Ino station, 1.7 km
📞 +8127-362-1726
📋 Show at the counter: 天然温泉 高崎天神の湯
Nearby
Other baths close by
Takasaki · 3.8★
Takasaki · 4.0★
Maebashi · 4.1★
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