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TAIKOUYU

太閤湯たいこうゆ

Public Bathhouse

Day Use

Yes

Bathing & Water

Natural onsen water

Uses natural hot spring water

Outdoor BathNo

Open-air outdoor bath

Indoor BathYes

Enclosed indoor bathing area

SaunaNo

Sauna room of any kind

Cold BathNo

Cold water plunge bath, typically used after sauna

Bathing Arrangements

Private BathNo

A private bath you can reserve for yourself or your group

Mixed BathingNo

Shared bathing area for all genders

太閤湯

Taikouyu Spring (Miyanoshita Onsen)

Mixed source

塩
Chloride
Color
colorless and transparent
Taste
not recorded
Odor
odorless
Hot source · 64°CHigh silica
Known good for
  • Warmingcold sensitivity
  • Aches & jointsstiff shoulders
  • Smooth skindry, rough skin

A sodium chloride spring — salty, heat-retaining water that the posted notice still labels by its old name, jun-shokuen-sen ("pure salt spring"). It is weakly alkaline and soft on the skin, and a generous 134 mg/kg of metasilicic acid puts it squarely in Japan's beauty-water family; dissolved solids of 1,321 mg/kg give the water moderate body without heaviness. The notice lists cuts, peripheral circulation disorders, cold sensitivity, depressed mood and dry skin among the spring-type indications. The bath is fed by a blend of two registered wells (Onsen-mura No. 28 and No. 29).

Analyzed Mar 5, 2018·神奈川県温泉地学研究所

Explore the water

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Dimitry R

4 months ago

The onsen is amazing, the water in the large bath is 43-44°C, very invigorating. The rustic atmosphere is overwhelming. It's genuine kakenagashi (free-flowing) water. I will always come here whenever I have the chance.

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Onsen Oni

Last updated October 5, 2026