Ryokan (inn) · Open
Myoken Ishiharaso
- Day-use bathing
- Yes
- Fee
- ¥1,800checked 2026-10-09
- Hours
- 11:30–15:00checked 2026-10-09
Myōken Onsen
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Official classification
Spring type (therapeutic classes)
Official spring-type name (as recorded)Sodium–calcium–magnesium bicarbonate hot spring (hypotonic, neutral, hot) for most sources; formerly classed as an earthy bicarbonate spring
- Source temperature
- Unconfirmed
- pH
- Unconfirmed
- Flow rate
- Unconfirmed
- Radon
- Unconfirmed
Appearance & feel
Water colour · Feel
Unconfirmed
Colour and feel are listed only where a source states them. They vary by day and by bath.
What makes it special
A riverside toji village on the Amori River where every inn has its own spring and not a single bath is recirculated.
Why?
The Myoken Onsen promotion association states that every inn owns its own source, that no inn in Myoken uses recirculated baths, and that every tub is free-flowing.[1]
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.
Ryokan (inn) · Status unconfirmed
Tajima Honkan (toji inn)
- Day-use bathing
- Unconfirmed
- Fee
- Unconfirmedno check date
- Hours
- Unconfirmedchecked 2026-10-09
Ryokan (inn) · Status unconfirmed
Kiraku Onsen (room-only inn)
- Day-use bathing
- Unconfirmed
- Fee
- Unconfirmedno check date
- Hours
- Unconfirmedchecked 2026-10-09
Getting there
Reachable by public transport
From JR Hayato Station on the Nippo Line, the Kagoshima Kotsu 'Myoken route bus' takes about 20 minutes. It runs 3–4 times a day, the same timetable every day, linking Kokubu Station, Hayato Station, Kareigawa Station and Kagoshima Airport. A taxi from the airport or Hayato Station costs about 3,000 yen.
- Getting there
- Hayato Station · 20
- Getting there
- 3–4 buses a day (same timetable every day)
- Checked
- 2026-10-09
About the water
Myoken's water is a neutral bicarbonate spring carrying sodium, calcium and magnesium; Ishiharaso's Amori-den source totals 2,264 mg/kg of minerals. Bicarbonate water is said to soften old skin, and the inn likens it to soap. Dissolved gas and minerals escape once the water meets the air, so some inns go to lengths, such as cooling it through heat exchangers, to deliver it as it comes out of the ground. The association lists general indications such as neuralgia and muscle pain, and for this water type cuts, burns and chronic skin conditions; we make no medical claims.
Indications (as posted on the analysis)
Posted by the Myoken association. General: neuralgia, muscle pain, arthritis, frozen shoulder, motor paralysis, stiff joints, bruises, sprains, chronic digestive complaints, haemorrhoids, poor circulation, convalescence, fatigue, general health. By water type (bathing): burns, cuts, chronic skin conditions; (drinking): chronic digestive complaints, diabetes, gout, liver complaints
Indications are an official statement based on the water analysis, not a guarantee of treatment. They are kept separate from opinions.
| Source | Source temperature | pH | Radon | Checked |
|---|---|---|---|---|
| Amori-den source (Myoken Ishiharaso) | Unconfirmed | Unconfirmed | Unconfirmed | no check date |
Three things not to miss
Every tub free-flowing
The whole village Each inn has its own source and none recirculates its water. The association notes that the formal name, composition and even colour differ slightly from source to source.
Few spa towns can say no bath anywhere is recirculated. Change inns and you meet subtly different water in the same valley.[1]
Day bathing at Myoken Ishiharaso
On the Amori River, 15 minutes by car from Kagoshima Airport An inn with seven private sources on its grounds. A heat exchanger cools the 56 °C water to 42 °C without exposing it to air, so it is never diluted, reheated or chlorinated. Day bathing 11:30–15:00 (last entry 13:30), adults 1,800 yen, no booking, cash only.
The inn explains in detail how it keeps the gas and minerals in the water all the way to the tub, so this is the place to test Myoken's 'freshness' on a day visit.[2][3]
Self-catering toji inns
Inns in Myoken In the association's list, the toji inn Tajima Honkan offers both ryokan and self-catering stays, while Kiraku Onsen, Shusuiyu and Myoken Rakuenso are listed as budget room-only inns with self-catering.
Wikipedia also notes that Myoken began as a toji village with many self-catering inns. The old way of using a spa, staying several nights and bathing day after day, is still alive here.[4][5]
The story
A spring found at a shrine
According to Wikipedia, Myoken Onsen opened in 1895 and takes its name from the old site of the Myoken Shrine where the spring was found. In 1967 it was designated a national health resort spa. It is the largest of the Shinkawa Valley springs along the Amori River, and grew up as a toji village, which is why so many inns offer self-catering.[5]
Volcanic heat by the river
Ishiharaso explains that the heat and minerals come from volcanic gas generated beneath the Kirishima volcanic belt, active for 300,000 years, which mixes with groundwater and rises as hot water. The inn builds its tubs right next to the sources and sizes them so that the 150 litres a minute pouring in replace the whole tub in exactly an hour.[3]
Going solo
Easy for solo travellersUnconfirmed
Weekend / peak restrictionsUnconfirmed
Where to eat dinnerUnconfirmed
Private bathYes
checked 2026-10-09
Through the year
Recommended months
JanFebMarAprMayJunJulAugSepOctNovDec
Months open
JanFebMarAprMayJunJulAugSepOctNovDec
"Recommended" and "open" are recorded separately. Check the season for seasonal springs.
Jan · Feb · Dec — Winter toji in riverside outdoor baths; the bus keeps the same timetable on weekends and holidays
Food, culture & experiences
JR Kareigawa Station
A Hisatsu Line station opened in 1903, famous for its 120-year-old wooden building and its ekiben. The Myoken bus stops outside; no taxis wait here[7]
On the Myoken route busEditors' guide
Myoken is close to Kagoshima Airport, so it works for a bath on your arrival or departure day. For day bathing go to Ishiharaso: last entry 13:30, cash only. To stay, pick a room-only or self-catering inn from the association list and bathe for several days, the traditional way to use Myoken. With only 3–4 buses a day, check the timetable first.
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.
Onsen areas nearby
Unconfirmed & notes
- Solo-stay acceptance, day-bathing fees and hours (other than Ishiharaso), and descriptions of water colour or bubbles were not confirmed
- The link to Tajima Honkan's own site in the association list now leads to an unrelated page and was not used
- The 'Yuji' spring-hopping scheme is listed as suspended on the association site
Sources
- 泉質と適応症について(妙見温泉振興会)妙見温泉振興会 · 2026-10-09
- 日帰りプラン(妙見石原荘 公式)妙見石原荘 · 2026-10-09
- 妙見石原荘の湯(妙見石原荘 公式)妙見石原荘 · 2026-10-09
- 旅館・ホテル一覧表(妙見温泉振興会)妙見温泉振興会 · 2026-10-09
- 妙見温泉 (鹿児島県) - Wikipedia(日本語版)Wikipedia · 2026-10-09
- よくあるご質問(妙見石原荘 公式)妙見石原荘 · 2026-10-09
- 交通アクセス(妙見温泉振興会)妙見温泉振興会 · 2026-10-09
Register sources
- 妙見温泉 (鹿児島県) - Wikipedia(日本語版)Wikipedia · CC BY-SA 4.0 · 2026-10-09
- Wikidata Q11447034Wikidata · CC0 · 2026-10-09
Data status
Name & locationPublishedCoordinatesPublishedSpring typePublishedPhotosIn preparationFacilitiesPublishedVisiting info (dated)PublishedEditorial articlePublished
Updated 2026-10-09
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