Kawayu Onsen
川湯温泉
Hokkaido · 100 Onsen to Know Japan — No. 2
Water acidic enough to corrode a nail runs as an open river through the middle of town.
Japan Onsen Atlas
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24 of 1918
川湯温泉
Hokkaido · 100 Onsen to Know Japan — No. 2
Water acidic enough to corrode a nail runs as an open river through the middle of town.
十勝川温泉
Hokkaido · 100 Onsen to Know Japan — No. 6
Not volcanic heat but ancient plants: the brown, silky 'moor' spring that defines the type in Japan.
豊富温泉
Hokkaido · 100 Onsen to Know Japan — No. 5
They drilled for oil and struck hot water: an amber, petrol-scented spring that draws long-stay bathers from all over Japan.
登別温泉
Hokkaido · 100 Onsen to Know Japan — No. 1
Ten thousand tonnes of water a day and nine kinds of spring, all boiling out of a single valley called Hell.
丸駒温泉
Hokkaido · 100 Onsen to Know Japan — No. 4
The bath is exactly as deep as Lake Shikotsu is high that day: an open-air tub joined to the lake.
湯の川温泉
Hokkaido · 100 Onsen to Know Japan — No. 7
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.
カルルス温泉
Hokkaido · 100 Onsen to Know Japan — No. 8
Named after a Bohemian spa, Karurusu was Hokkaido's first National Recuperation Hot Spring Area: a quiet, clear-water place for long stays.
浅虫温泉
Aomori · 100 Onsen to Know Japan — No. 11
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.
黄金崎不老不死温泉
Aomori · 100 Onsen to Know Japan — No. 12
A rust-brown pool cut into the rocks at the very edge of the Sea of Japan, with nothing between you and the sunset.
酸ヶ湯
Aomori · 100 Onsen to Know Japan — No. 9
A 160-tatami bathhouse of hiba cypress without a single pillar, where men and women share acidic water under Japan's deepest snow.
蔦温泉
Aomori · 100 Onsen to Know Japan — No. 10
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.
大沢温泉
Iwate · 100 Onsen to Know Japan — No. 17
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.
須川温泉
Iwate · 100 Onsen to Know Japan — No. 16
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.
鳴子温泉
Miyagi · 100 Onsen to Know Japan — No. 18
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.
後生掛温泉
Akita · 100 Onsen to Know Japan — No. 15
Mud bath, box steam bath, bubbling volcano bath, a natural-steam sauna: seven ways to take the waters under one roof.
玉川温泉
Akita · 100 Onsen to Know Japan — No. 13
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.
鶴の湯温泉
Akita · 100 Onsen to Know Japan — No. 14
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.
銀山温泉
Yamagata · 100 Onsen to Know Japan — No. 20
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.
蔵王温泉
Yamagata · 100 Onsen to Know Japan — No. 19
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.
肘折温泉
Yamagata · 100 Onsen to Know Japan — No. 21
At five in the morning a market opens under the eaves of a snow-country spa village that has been in business since 807.
飯坂温泉
Fukushima · 100 Onsen to Know Japan — No. 23
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.
高湯温泉
Fukushima · 100 Onsen to Know Japan — No. 22
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.
二岐温泉
Fukushima · 100 Onsen to Know Japan — No. 24
The water rises straight out of the rock beneath your feet, in a riverside valley whose spring was reputedly found in 969.
日光湯元温泉
Tochigi · 100 Onsen to Know Japan — No. 32
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.
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