Japan Onsen Atlas

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24 of 1918

A steaming river and footbath in snow Chatama (talk) · CC BY-SA 3.0

Kawayu Onsen

川湯温泉

Hokkaido · 100 Onsen to Know Japan — No. 2

AcidicSulfurIronSulfateChloride

Water acidic enough to corrode a nail runs as an open river through the middle of town.

Free-flowingYesGetting thereYesSolo stayUnconfirmed
Hotels along the Tokachi River 663highland · CC BY 2.5

Tokachigawa Onsen

十勝川温泉

Hokkaido · 100 Onsen to Know Japan — No. 6

ChlorideBicarbonate

Not volcanic heat but ancient plants: the brown, silky 'moor' spring that defines the type in Japan.

Free-flowingUnconfirmedGetting thereYesSolo stayUnconfirmed
Exterior of a single-storey bathhouse 切干大根 · CC BY-SA 4.0

Toyotomi Onsen

豊富温泉

Hokkaido · 100 Onsen to Know Japan — No. 5

IodineChlorideBicarbonate

They drilled for oil and struck hot water: an amber, petrol-scented spring that draws long-stay bathers from all over Japan.

Free-flowingYesGetting thereYesSolo stayYes
Grey crater floor of Jigokudani with rising steam Calistemon · CC BY-SA 4.0

Noboribetsu Onsen

登別温泉

Hokkaido · 100 Onsen to Know Japan — No. 1

SulfurChlorideSulfateIronAcidicBicarbonateRadon

Ten thousand tonnes of water a day and nine kinds of spring, all boiling out of a single valley called Hell.

Free-flowingYesGetting thereYesSolo stayUnconfirmed
A mountain rising beyond the lake Soica2001 (talk) · Public domain

Marukoma Onsen

丸駒温泉

Hokkaido · 100 Onsen to Know Japan — No. 4

ChlorideBicarbonateSulfate

The bath is exactly as deep as Lake Shikotsu is high that day: an open-air tub joined to the lake.

Free-flowingYesGetting thereYesSolo stayUnconfirmed
People sitting at a roofed footbath OraMAAG · CC BY 4.0

Yunokawa Onsen

湯の川温泉

Hokkaido · 100 Onsen to Know Japan — No. 7

Chloride

Five minutes from the airport, at the end of the tram line: a spring of 4,861 litres a minute in the middle of a working port city.

Free-flowingYesGetting thereYesSolo stayUnconfirmed
Entrance to a small spa village in the hills Soica2001 (talk) · Public domain

Karurusu Onsen

カルルス温泉

Hokkaido · 100 Onsen to Know Japan — No. 8

Simple

Named after a Bohemian spa, Karurusu was Hokkaido's first National Recuperation Hot Spring Area: a quiet, clear-water place for long stays.

Free-flowingUnconfirmedGetting thereYesSolo stayUnconfirmed
Aerial photo of hot-spring hotels lining a bay, with a small wooded island offshore ブルーノ・プラス · CC BY 4.0

Asamushi Onsen

浅虫温泉

Aomori · 100 Onsen to Know Japan — No. 11

SulfateChloride

Twenty-five minutes by local train from Aomori, you step off the platform straight into a hot-spring town with Mutsu Bay at your feet.

Free-flowingUnconfirmedGetting thereYesSolo stayUnconfirmed
An open-air hot-spring pool set among rocks on the shore at dusk おにく · CC0

Furofushi Onsen

黄金崎不老不死温泉

Aomori · 100 Onsen to Know Japan — No. 12

ChlorideIron

A rust-brown pool cut into the rocks at the very edge of the Sea of Japan, with nothing between you and the sunset.

Free-flowingYesGetting thereYesSolo stayYes
A large wooden inn in the mountains ゆ^ω^び · CC BY-SA 2.1 jp

Sukayu Onsen

酸ヶ湯

Aomori · 100 Onsen to Know Japan — No. 9

AcidicSulfur

A 160-tatami bathhouse of hiba cypress without a single pillar, where men and women share acidic water under Japan's deepest snow.

Free-flowingYesGetting thereYesSolo stayUnconfirmed
A timber bath hall with a high ceiling 張振 · CC BY-SA 3.0

Tsuta Onsen

蔦温泉

Aomori · 100 Onsen to Know Japan — No. 10

SulfateBicarbonateChloride

The spring bubbles up between the floorboards of the bath itself: a thousand-year-old hot spring at a lone inn in a beech forest.

Free-flowingYesGetting thereYesSolo stayUnconfirmed
Exterior of an old wooden long-stay inn 掬茶 · CC BY-SA 4.0

Ōsawa Onsen

大沢温泉

Iwate · 100 Onsen to Know Japan — No. 17

Simple

A mixed open-air bath hanging over the Toyosawa River, and a self-catering wing where a night costs a little over 4,000 yen. The old toji way of life is still intact here.

Free-flowingYesGetting thereYesSolo stayYes
A large milky-white outdoor pool ringed by rocks Yas Nakano · CC BY-SA 3.0

Sukawa Onsen

須川温泉

Iwate · 100 Onsen to Know Japan — No. 16

IronSulfurSulfateChlorideAcidic

At 1,126 metres on the flank of Mt Kurikoma, 6,000 litres a minute of strongly acidic water pour into Dainichi-yu, an open-air bath big enough for fifty.

Free-flowingUnconfirmedGetting thereYesSolo stayYes
Entrance of a wooden communal bathhouse Zhaitengli · CC BY 4.0

Naruko Onsen

鳴子温泉

Miyagi · 100 Onsen to Know Japan — No. 18

SulfurSulfateBicarbonateChlorideSimpleIronAcidic

Seven of Japan's ten official spring types in one valley. The communal Takinoyu by the station costs 300 yen, and the town lends you wooden geta to clatter from bath to bath.

Free-flowingUnconfirmedGetting thereYesSolo stayUnconfirmed
Entrance of a wooden mountain hot-spring inn らんで · CC BY-SA 4.0

Goshougake Onsen

後生掛温泉

Akita · 100 Onsen to Know Japan — No. 15

Sulfur

Mud bath, box steam bath, bubbling volcano bath, a natural-steam sauna: seven ways to take the waters under one roof.

Free-flowingYesGetting thereYesSolo stayYes
A steaming barren valley with inn buildings and lingering snow あおもりくま · CC BY-SA 3.0

Tamagawa Hot Spring

玉川温泉

Akita · 100 Onsen to Know Japan — No. 13

AcidicChloride

At pH 1.2 and roughly 9,000 litres a minute from a single vent, Japan's most acidic hot spring pours out of a steaming valley.

Free-flowingUnconfirmedGetting thereYesSolo stayYes
A wooden gate with a long thatched-roof building beyond lumoplank · CC0

Tsurunoyu Onsen

鶴の湯温泉

Akita · 100 Onsen to Know Japan — No. 14

SulfurChlorideBicarbonate

Below a thatched guardhouse, a milky-white pool bubbles up from the ground beneath your feet. This is the oldest inn in the Nyuto hot-spring valley.

Free-flowingUnconfirmedGetting thereYesSolo stayYes
Three- and four-storey wooden inns along a river lumoplank · CC0

Ginzan Onsen

銀山温泉

Yamagata · 100 Onsen to Know Japan — No. 20

SulfurChloride

Along both banks of the Ginzan River stand three- and four-storey wooden inns from the 1920s and 30s. On snowy nights the gas lamps come on.

Free-flowingUnconfirmedGetting thereYesSolo stayUnconfirmed
A street in a mountain onsen town 663highland · CC BY-SA 4.0

Zaō Onsen

蔵王温泉

Yamagata · 100 Onsen to Know Japan — No. 19

AcidicSulfurSulfateChloride

Strongly acidic sulfur water at pH 1.25–1.6. Three communal baths for 300 yen each, a vast riverside open-air bath, and in winter the snow monsters of Zao.

Free-flowingYesGetting thereYesSolo stayUnconfirmed
Snow-covered ryokan street in Hijiori Onsen Totti · CC BY-SA 4.0

Hijiori Onsen

肘折温泉

Yamagata · 100 Onsen to Know Japan — No. 21

ChlorideBicarbonate

At five in the morning a market opens under the eaves of a snow-country spa village that has been in business since 807.

Free-flowingUnconfirmedGetting thereYesSolo stayUnconfirmed
Wooden exterior of Sabako-yu bathhouse Higa4 · CC0

Iizaka Onsen

飯坂温泉

Fukushima · 100 Onsen to Know Japan — No. 23

Simple

Twenty-five minutes by local train from Fukushima Station, a town with nine public bathhouses where you sit in very hot water next to the people who live there.

Free-flowingUnconfirmedGetting thereYesSolo stayUnconfirmed
Attaka-yu bathhouse in snow Purplepumpkins · CC BY-SA 3.0

Takayu Onsen

高湯温泉

Fukushima · 100 Onsen to Know Japan — No. 22

Sulfur

Nine sources, 2,589 litres a minute, and not a drop of tap water or a single boiler: the milky water is cooled only by gravity on its way down the hill.

Free-flowingYesGetting thereYesSolo stayUnconfirmed
Inns in the mountain valley of Futamata Onsen 東北線 · CC BY-SA 3.0

Futamata Onsen

二岐温泉

Fukushima · 100 Onsen to Know Japan — No. 24

Sulfate

The water rises straight out of the rock beneath your feet, in a riverside valley whose spring was reputedly found in 969.

Free-flowingUnconfirmedGetting thereYesSolo stayUnconfirmed
Spring huts standing in a snowy marsh Σ64 · CC BY 3.0

Nikkō Yumoto Onsen

日光湯元温泉

Tochigi · 100 Onsen to Know Japan — No. 32

Sulfur

At 1,500 metres beside a lake, spring huts stand in a marsh where clear water turns milky white the moment it meets the air.

Free-flowingYesGetting thereYesSolo stayUnconfirmed