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Tenzan Onsen

天山湯治郷てんざんとうじきょう

Bathing Complex

Day Use

Yes

Bathing & Water

Natural onsen water

Uses natural hot spring water

Outdoor BathYes

Open-air outdoor bath

SaunaYes

Sauna room of any kind

Cold BathYes

Cold water plunge bath, typically used after sauna

Bathing Arrangements

Private BathYes

A private bath you can reserve for yourself or your group

Mixed BathingNo

Shared bathing area for all genders

Policies & Services

TattooYes

Allows entry with visible tattoos

DiningYes

A restaurant or dining room open to visitors, not only meals for overnight guests

WashingYes

Shower, wash stations, soap and shampoo provided

TowelsYes

Towels to rent or borrow at the desk

Rest AreaYes

Relaxation space for after bathing

ParkingYes

On-site or nearby parking available

Free

天山湯治郷源泉

Tenzan Tojikyo Spring

Operated by · 天山湯治郷

塩
Chloride
Color
colorless
Taste
weakly salty
Odor
odorless
Hot source · 70°C
Known good for
  • Warmingcold sensitivity
  • Aches & jointsstiff shoulders
  • Smooth skindry, rough skin

A sodium chloride spring of the weakly alkaline, heat-retaining family. The source runs hot at 70 °C — among Japan's hotter natural sources — yet the water feels soft on the skin. Moderate mineralization at 1,210 mg/kg dissolved solids gives it noticeable body without being heavy.

一般財団法人 北里環境科学センター

Explore the water

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5.0

1 review

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Sergey M
2 years ago· edited

183. Tenzan Onsen, Hakone ★★★ A top onsen in Hakone that needs no introduction. Admission is ¥1,450. In essence, it is like a super sento in an old ryokan building that is in excellent condition. The day of my visit was very rainy, and there were not many visitors in the evening. As a result, the atmosphere in the bath area was wonderful, with the cooling rain, perfectly done evening lighting, top-notch company, and a great aesthetic in the bath area. In principle, once I had already reached the changing room and saw the baths, I no longer had any questions about why this onsen is so highly regarded. About the baths: 1. Large rectangular wooden bath. The water was clear, and the temperature was around 42-43. 2. Corner bath next to the clear-water bath, just warm in temperature. 3. Main large stone bath. Temperature around 40. 4. Additional section by the large bath with a temperature around 44-45. 5. Two mini baths up the stairs. Temperature around 40. 6. Steam bath in a small house. 7. Cold stone bath. Top. When I am in Hakone again, I will go to Tenzan once more. 12.07.2024

Last updated October 11, 2026