The public bathhouse building in Kakeyu Onsen
Photo information

Hokuriku & Koshinetsu · Onsen area

Kakeyu Onsen

かけゆおんせん · 鹿教湯温泉

Nagano · 上田市

Status unconfirmedNational Health Resort Onsen100 Onsen to Know Japan — No. 52
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Official classification

Spring type (therapeutic classes)

Official spring-type name (as recorded)Simple hot spring (mildly alkaline, hypotonic, high temperature)

Source temperature
42°C
pH
Unconfirmed
Flow rate
Unconfirmed
Radon
Unconfirmed

Appearance & feel

Water colour · Feel

Clear

Colour and feel are listed only where a source states them. They vary by day and by bath.

What makes it special

A 475-bed rehabilitation hospital stands in the middle of the village, and the inns advertise solo travellers welcome all year and self-catering wings. Here toji, the long therapeutic stay, is still a living practice.
Why?

Kakeyu Hospital (JA Nagano Koseiren) opened on 1 September 1956 and has 475 beds; it has served as a rehabilitation hospital for stroke and orthopaedic patients for over 70 years. The association's inn list notes 'solo travellers welcome all year' (Fujiya Ryokan) and a 'self-catering wing' (Kajikaso).[6][5]

Facilities in this area

Facilities come from the register (Wikipedia, OpenStreetMap, official sites). Those marked "natural spring unconfirmed" are listed on the basis of their name only.

Public bathhouse · Open

Monju-no-yu

Day-use bathing
Yes
Fee
¥350checked 2026-10-09
Hours
9:00–21:00checked 2026-10-09
Baths2
TypeGenderSourceBath temperatureFree-flowingAdded waterHeatedRecirculatedDisinfected
Indoor bathSeparateBlend of five sourcesUnconfirmedUnconfirmed[3]Unconfirmed[3]Unconfirmed[3]Unconfirmed[3]Unconfirmed[3]
Open-air bathSeparateBlend of five sourcesUnconfirmedUnconfirmed[3]Unconfirmed[3]Unconfirmed[3]Unconfirmed[3]Unconfirmed[3]
Ryokan (inn) · Open

Fujiya Ryokan

Day-use bathing
Unconfirmed
Fee
Unconfirmedno check date
Hours
Unconfirmedchecked 2026-10-09
Ryokan (inn) · Open

Kajikaso

Day-use bathing
Unconfirmed
Fee
Unconfirmedno check date
Hours
Unconfirmedchecked 2026-10-09
Baths1
TypeGenderSourceBath temperatureFree-flowingAdded waterHeatedRecirculatedDisinfected
Open-air bathUnconfirmedUnconfirmedUnconfirmedUnconfirmed[5]Unconfirmed[5]Unconfirmed[5]Unconfirmed[5]Unconfirmed[5]

Getting there

Reachable by public transport

From Ueda (Hokuriku Shinkansen) about 70 minutes by Chikuma Bus, three a day; or from Matsumoto about 50 minutes by Alpico bus, two on weekdays only. A free car park (about 40 spaces) is beside the Kakeyu community centre.

Getting there
Ueda Station · 70
Getting there
Three buses a day from Ueda (13:12, 16:17, 17:32); two on weekdays from Matsumoto (9:30, 14:15)
Through the year
Buses are few and the Matsumoto service does not run on weekends or holidays. Winter (Nov–Mar) morning exercises move indoors to the community centre
Checked
2026-10-09

About the water

The association posts a simple hot spring (mildly alkaline, hypotonic, high temperature) at 46.0 °C, colourless and odourless. With a low mineral load it is gentle on the skin, which is why it has long been used for toji, extended cure stays. Monju-no-yu blends water from five sources. Drinking indications (constipation and so on) are also posted, with a note that children under 15 should not drink it. Bathing indications include high blood pressure, after-effects of stroke and movement disorders; these are listings, not guarantees.

Indications (as posted on the analysis)

Bathing: neuralgia, joint pain, rheumatism, high blood pressure, after-effects of stroke, movement disorders. Drinking: constipation and digestive regulation (not for children under 15), as posted by the association

Indications are an official statement based on the water analysis, not a guarantee of treatment. They are kept separate from opinions.

SourceSource temperaturepHRadonChecked
Kakeyu Onsen (representative value posted by the association)46UnconfirmedUnconfirmedno check date

Three things not to miss

The public bathhouse building in Kakeyu Onsen
Photo information
01

Monju-no-yu public bath

On Yubata-dori, at the foot of the Godai Bridge A public bath built in 2000 on the site of Kakeyu's oldest spring. Two indoor tubs and one open-air tub on each side; hot water from five sources is blended. 350 yen adults, 200 yen children; 9:00–21:00, open every day.

The cheapest way to try the same simple spring water the inns use, and it sits on the path to the Monju-do temple, so you see how bathing and worship share the same ground.[3]

02

The Godai Bridge and Monju-do

Just across the gorge from the village The Godai Bridge is a roofed wooden bridge over the gorge between the village and the Monju-do and Yakushi-do halls. Monju-do is a Nagano prefectural treasure and counted among Japan's three great Monju (Manjushri) temples.

The name Kakeyu, 'the bath taught by a deer', comes from the legend that Monju took the form of a deer to show a hunter the spring, and this hall is where that story lives. Every morning at 9:00 there is a health exercise session in the grounds (not Tuesdays; in a community centre in winter).[4][7][8]

03

Ice-lantern prayer nights

From Yuzaka past Monju-no-yu, over the Godai Bridge to Monju-do and Yakushi-do From 26 December to 31 January (2025–26 season), about 200 lanterns carved from ice are lit with candles from 16:30 until around 21:00. Visitors can help light them from 16:30; free.

Real flame and real ice rather than electric illumination: a festival that suits the quiet of a winter cure village, and all within a short walk of the bath.[9]

The story

The bath a deer revealed

The name Kakeyu, 'the bath taught by a deer', comes from a legend in which the bodhisattva Monju took the form of a deer to show a devout hunter where the hot water rose. The Monju-do hall across the gorge enshrines a statue said to have been carved by the monk Gyoki, and the spring is held to have been flowing some 1,200 years ago. By the Edo period it was a flourishing toji resort, as the tourism association still notes. In 1956 it was designated a National Health Resort Hot Spring together with Reisenji and Oshio as 'Uchimura Onsen', later renamed the Maruko hot-spring group.[4][2]

A spa with a hospital

In September 1956, the same year as the health-resort designation, the JA Nagano agricultural cooperative's medical arm opened a hospital in Kakeyu. Today's Kakeyu Hospital has 475 beds and has spent more than seventy years as a rehabilitation hospital for stroke and orthopaedic patients, merging with Misayama Hospital in 2023. With the hospital at the centre, inns offering self-catering wings and room-only stays, and a trainer from the Kurhaus leading exercises in the Monju-do grounds at nine every morning, this is the old toji tradition carried on alongside modern medicine.[6][5][8]

A plain, gentle simple spring

The association posts a simple hot spring (mildly alkaline, hypotonic, high temperature) at 46.0 °C, colourless and without any strong character. At Monju-no-yu the hot water of five sources is blended for two indoor tubs and an open-air tub on each side. A gentle water you can bathe in daily without fatigue is exactly what a long-stay cure village needs. Drinking indications are posted too, with a warning that children under 15 should not drink it.[2][3]

A mountain bath reached by bus

There is no railway station: buses take about 70 minutes from Ueda (three a day) or about 50 minutes from Matsumoto (two on weekdays, none on weekends or holidays). With so few services, fix your bus time before you book a room. By car it is about 40 minutes from either the Tobu-Yunomaru or Matsumoto expressway exits, with a free 40-space car park beside the community centre.[4]

Going solo

Easy for solo travellersYes
Weekend / peak restrictionsUnconfirmed
Where to eat dinnerAbout five eateries in the village: soba (Tatsumiya, 11:00–20:30), sushi (Hakko), curry (Hakusen), a sweets shop (Seiryodo)
Private bathUnconfirmed

checked 2026-10-09

Through the year

Recommended months

Months open

JanFebMarAprMayJunJulAugSepOctNovDec

"Recommended" and "open" are recorded separately. Check the season for seasonal springs.

Dec · Jan — Ice-lantern prayer nights (26 Dec–31 Jan, lit 16:30 to about 21:00)

Apr — Monju-do spring festival (Sunday nearest 25 April)

Jun — Fireflies mid–late June; Sunday morning market from June to late November

Oct — Autumn food-and-bath festival week (October)

Food, culture & experiences

Available / bookable

Kakeyu 21-spot stamp walk

Stamp books are 200 yen at inn receptions and the ryokan association office; complete the set for a certificate and souvenir[7]

A loop around the village

Editors' guide

Arrive on the early-afternoon bus, walk along Yubata-dori to Monju-no-yu (350 yen), then cross the Godai Bridge to Monju-do. Next morning, join the 9:00 exercise session and fall into the rhythm of a cure village. On a winter evening, walk the lantern-lit path.

The "editors' guide" above is written by the editors from sources; it is not a visitor's opinion.

Visitor reviews

No reviews yet. While the review platform is being prepared, we do not display fictional reviews or ratings.

Review posting is in preparation, with visit date, facility, comments on water, scenery and access, photos, language and reporting.

Overview

鹿教湯温泉(かけゆおんせん)は、長野県上田市(旧丸子町、旧西内村、旧国信濃国)にある温泉。

This overview is based on the lead section of the Japanese Wikipedia article "鹿教湯温泉" (CC BY-SA 4.0). View original page

Unconfirmed & notes

  • pH, flow and analysis date not readable on official pages
  • Monju-no-yu's notices on added water, heating, recirculation, disinfection and its tattoo policy were not confirmed
  • Bus fares and walking time from the stop were not confirmed
  • Inn rates and solo surcharges not confirmed; only the 'solo welcome' and 'room-only' listings were read

Sources

  1. 信州 鹿教湯温泉(観光協会・旅館協同組合)公式サイト鹿教湯温泉旅館協同組合 · 2026-10-09
  2. 鹿教湯温泉について鹿教湯温泉旅館協同組合 · 2026-10-09
  3. 鹿教湯温泉「文殊の湯」(上田市 丸子産業観光課)上田市 · 2026-10-09
  4. 鹿教湯温泉 - WikipediaWikipedia · 2026-10-09
  5. 鹿教湯温泉 宿泊施設鹿教湯温泉旅館協同組合 · 2026-10-09
  6. 鹿教湯病院 病院概要(JA長野厚生連 鹿教湯三才山リハビリテーションセンター)JA長野厚生連 · 2026-10-09
  7. 鹿教湯温泉 おすすめスポット鹿教湯温泉旅館協同組合 · 2026-10-09
  8. 鹿教湯温泉 健康・アクセス鹿教湯温泉旅館協同組合 · 2026-10-09
  9. 氷灯ろう夢祈願鹿教湯温泉旅館協同組合 · 2026-10-09
  10. 鹿教湯温泉 イベント鹿教湯温泉旅館協同組合 · 2026-10-09
  11. 鹿教湯温泉 飲食店鹿教湯温泉旅館協同組合 · 2026-10-09

Register sources

Data status

Name & locationPublishedCoordinatesPublishedSpring typePublishedPhotosPublishedFacilitiesPublishedVisiting info (dated)PublishedEditorial articlePublished

Updated 2026-10-09

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