Nature-Immersion Onsen & Sauna
Open-air baths that dissolve into the forest. Cold plunges drawn from mountain streams. We curate ryokan, onsen hotels and day-use bathhouses where bathing and the surrounding nature feel inseparable — a deep forest-bathing experience layered with the onsen and sauna ritual, whether you stay overnight or visit just for the day.
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Nature-Immersion Day-Use Onsen, Hotels & Ryokan
120 of 120 have photography — shown first
Kyoto
Kurama Onsen
A mountain-village onsen of Kurama views and soothing sulfur springs
Hokkaido
Noboribetsu Grand Hotel
Noboribetsu’s stately house of welcome, where the Oni Sauna and three celebrated springs melt body and mind
Hokkaido
KIKI Shiretoko Natural Resort
Four distinctive saunas and a natural onsen, embraced by the Shiretoko forest
Saga
OND HOTEL
A superb hotel where Takeo’s nature and a range of saunas unwind body and mind
Saga
Mifuneyama Rakuen Hotel
A luxury resort in harmony with the nature of Mount Mifune
Yamaguchi
Nishinoichi Onsen Hotaru-no-Yu
Deep relaxation in a cold plunge of onsen source water and silky natural onsen
Nagano
Hoshino Onsen Tombo-no-Yu
A superb Karuizawa retreat where natural onsen water fed straight from the source and forest spring water bring on totonou, a state of deep relaxation
Miyagi
Ayashi Tenku-no-Yu Soyogi-no-Mori
A healing grove where natural onsen water from 1,100 m (3,610 ft) underground and innovative saunas beckon
Yamagata
Shonai Hotel Suiden Terrasse
A hotel floating above the rice paddies, with natural onsen water fed straight from the source and designer saunas
Iwate
Yamanokami Onsen Yukaen
A Japanese retreat of natural onsen fed straight from the source and the living craft of temple carpenters
Oita
Oku-Hita Onsen Umehibiki
A luxurious onsen resort embraced by the views and famed waters of Hibiki Gorge
Fukuoka
Yumeguri no Yado Nansuikaku
An inn cradled by the murmur of the Inunaki River, with open-air baths of every kind and a soothing cold spring
Fukushima
Urabandai Lake Resort Goshiki-no-Mori
A luxurious highland resort with sweeping views of Lake Hibara and a natural onsen for beautiful skin
Hokkaido
Yuyado Daiichi
A natural onsen inn fed straight from the source, where you slip into a clear stream after the sauna
Akita
Shikiirodori Akitazukushi Yuze Hotel
An Akita onsen inn with natural onsen water fed straight from the source and a beautiful river gorge
Miyagi
Hotel Zuiho
A large resort for blissful hours in the celebrated Akiu Onsen and its many open-air baths
Aomori
Sukayu Onsen Ryokan
A historic toji inn with five sources of its own flowing into a vast hall built entirely of hiba
Miyagi
Yuzukushi Salon Ichinobo
Yomogi-scented mist and natural onsen water fed straight from the source
Tokushima
Canyon Onsen Inn Oboke Gorge Mannaka
An onsen inn in Oboke Gorge overlooking the Yoshino River, where onsen and sauna set body and mind free
Gifu
Nagaragawa Seiryu Hotel
Exceptional totonou in a tea sauna scented with Mino Ibi tea and a panoramic main bathhouse overlooking the Nagara River
Hokkaido
Jozankei Yuraku Soan
A Jozankei onsen inn with a natural onsen bath in every room and four private open-air baths to have all to yourself
Kochi
OMO7 Kochi by Hoshino Resorts
Experience Kochi’s okyaku culture and the nature of Tosa, and recharge body and mind with the energy of yosakoi and a sauna with automatic löyly
Hokkaido
Akan Yuku no Sato Tsuruga
A luxury resort of Lake Akan views and natural onsen
Mie
TAOYA Minamishima
A seaside resort inn with a spectacular infinity onsen that merges with the Pacific
Miyagi
TAOYA Akiu
One of Oshu’s three famous onsen and an excellent sauna experience, all-inclusive
Wakayama
Ooedo Onsen Monogatari Nanki Kushimoto
An ocean-view onsen at Honshu’s southernmost tip, with the Pacific all to yourself
Gunma
Sekizenkan Kashotei
A historic onsen inn where you make your way around natural baths fed straight from the source and the famous Genroku-no-Yu, alive with Taisho-era romance
Hokkaido
Shikotsuko Tsuruga Resort Spa Mizu no Uta
A natural onsen that nurtures smooth skin, and a herbal löyly sauna bathed in blue light
Kumamoto
Ryokan Sanga (Kurokawa Onsen)
A hidden Kurokawa inn embraced by two sources of its own and the stillness of the forest
Nagano
GLAMDAY STYLE HOTEL & RESORT KYU-KARUIZAWA
A luxury resort where a celebrated Kita-Karuizawa spring and two saunas bring you to a state of deep relaxation (totonou)
Ishikawa
Shirasagiyu Tawaraya
Superb natural onsen water fed straight from the source, with 800 years of history and spectacular views of the Kakusenkei gorge
Toyama
Kurobe Unazuki Onsen Yamanoha
A resort inn in Unazuki with panoramic views of the Kurobe Gorge and soothing natural onsen water that beautifies the skin
Toyama
Unazuki Onsen Entaijiso
A long-established onsen inn where you can savor stunning Kurobe Gorge views and natural onsen water that leaves your skin silky smooth
Niigata
Akakura Kanko Hotel
A resort in the sky with seas of clouds and natural onsen water fed straight from the source
Hokkaido
Noboribetsu Onsenkyo Takinoya
A superb onsen inn where four natural springs and the forests of Noboribetsu soothe you
Gifu
Takumi no Yado Miyama Ouan
Natural onsen fed straight from the source, never recirculated, with views of the Northern Alps and a sauna with löyly you pour yourself
Gifu
Gero Onsen Ogawaya
Soak up Gero Onsen’s soft natural waters as you make your way around a variety of main bathhouses
Kanagawa
Tokinoyu Setsugetsuka
A Gora inn with natural onsen water fed straight from the source, never recirculated, and private open-air baths looking out on the Hakone mountains
Kanagawa
Mizunoto
An Onsen Inn in Hakone with Two Natural Onsen and Three Private Open-Air Baths
Gunma
Bettei Senjuan
A superb Tanigawa inn with natural onsen water fed straight from the source and a binchotan charcoal sauna
Gunma
Yuyado Tokinoniwa
A hilltop ryokan with open-air hot spring baths in every room, where you can tour two spring sources
Yamagata
Zao Onsen Zao Kokusai Hotel
A tranquil inn embraced by Zao’s great outdoors and a milky-white natural onsen fed straight from the source
Hokkaido
Jozankei Tsuruga Resort Spa Mori no Uta
A resort in the embrace of the Jozankei forest, with a fine natural onsen and an authentic sauna
Hokkaido
Toyako Tsuruga Resort Hikari no Uta
Blissful hours in natural onsen water and a room with its own open-air bath overlooking majestic Lake Toya
Hokkaido
La Vista Akangawa
A forest inn on the banks of the Akan River, with natural onsen water from its own source all to yourself
Akita
Yukemuri no Yado Inazumi Onsen
A secluded hideaway at the foot of Mount Kurikoma, where you can immerse yourself in natural hot spring water from its own source and the quiet of the forest.
Gunma
Konoha Inn
A Kusatsu inn with two sources to explore and private open-air baths to enjoy all to yourself
Tochigi
Wellness Forest Nasu
A British-style resort where you can have a private soak in four private baths with free-flowing natural hot spring water
Kanagawa
Tsuki no Yado Sara
A Hakone-Yumoto hot spring inn with open-air baths in every room and a tatami-floored public bath for relaxation
Gifu
Yumeguri no Yado Hirayukan
A superb inn where you can make your way around natural onsen baths fed straight from the source
Gifu
Oyado Yuinosho
An inn in a Shirakawa-go mountain hamlet where you can have a natural onsen and private open-air baths all to yourself
Wakayama
Hamachidori-no-Yu Kaishu
A cape-top inn with a mixed-gender open-air bath at the water’s edge and natural onsen fed straight from the source
Kanagawa
Hakone Gora Karaku
Panoramic open-air baths that look out to Sagami Bay, and an open-air onsen bath in every room
Kanagawa
Hakone Ashinoko Hanaori
A lakeside inn where the star is an open-air bath facing Lake Ashi
Miyagi
Akiu Grand Hotel
An Akiu onsen inn with spectacular Rairaikyo Gorge views and a round of baths to enjoy
Nagano
Le Grand Karuizawa Hotel & Resort
Karuizawa’s skin-beautifying onsen in a 70,000-tsubo forest, and cooling off in below-freezing winter air
Hyogo
Ginsuiso Choraku
An Arima inn where you can savor two celebrated waters, Kinsen and Ginsen, from its own source
Wakayama
TAOYA Shirahama Senjo
An ocean-view onsen resort where you soak in water from its own source and watch the sun set over the Pacific
Kumamoto
TAOYA Aso
A quiet onsen resort for adults, embraced by the views of Aso’s five peaks and a bath for beautiful skin
Yamagata
Zao Onsen Zao Shiki no Hotel
A highland resort by the forest and lake, where a separate bathhouse offers milky-white water fed straight from the source
Mie
Yunoyama Onsen Irodori Koyo
A secluded, hidden-spring-style open-air bath in the forest, a 3-minute walk away
Mie
Ise Kaguraba Resort Sen no Mori
Embraced by the lush green forest, restored by the smooth water of Shin-Misato Onsen and the fine food of Ise
Ehime
Okudogo Ichiyu no Mori
A lush green gorge and natural onsen water fed straight from the source at one of western Japan’s largest open-air baths
Shiga
Chomeiji Onsen Amaha no Yu
A soothing retreat of radium onsen and true sauna, wrapped in the Lake Biwa breeze and the scent of burning wood
Gifu
Natural Onsen Mitsumine
Natural onsen water fed straight from the source and an authentic löyly sauna, in a Japanese-style setting
Saga
OND SAUNA
An outdoor sauna for taking in Takeo’s nature with all five senses
Tochigi
Saplus
A superb experience of Kinugawa’s views and true saunas
Kagawa
Livemax Resort Sanuki Shionoe Onsen
A forest hideaway resort with a sauna where you pour your own löyly and a renowned onsen
Tokushima
Kamiyama Onsen Hotel Shiki no Sato & Iyashi-no-Yu
A tatami-floored Japanese-style space that is gentle on your feet, and a natural onsen in the foothills known for its skin-softening waters
Nagano
TAOYA Kisoji
Nagiso Onsen water as silky as skin lotion and a cottage sauna looking out over nature
Oita
Yuya Ebisu
Myoban’s traditional box steam bath and two superb springs: a healing place on high ground overlooking Beppu Bay
Oita
Hita Onsen Hananoki RIVER TERRACE
An inn in the town of water, with a spring rising on its own from 1,500 m (4,900 ft) underground and an authentic sauna for totonou, a state of deep relaxation
Fukuoka
FURO & SAUNA THE VANISH
A blissful bathhouse wrapped in the soft heat of wood stoves and tile art of classic paintings
Gifu
Livemax Resort Hida Takayama – Garyu no Sato
An extreme sauna above 110°C (230°F) and the natural spring water of Mount Kurai
Mie
Oedo Onsen Monogatari Premium Toba Saichoraku
A spectacular infinity open-air bath overlooking Toba Bay and the celebrated waters of Sakakibara Onsen
Kanagawa
Modern Toji Only You
Highly alkaline onsen for beautiful skin and serious saunas, wrapped in forest quiet and the murmur of a river
Chiba
SATOYAMA TERRACE
A mecca of outdoor saunas where the wind and water of the wooded hills fill all five senses
Fukushima
Bandai Meito Resort Bonari no Mori
Nakanosawa Onsen, with one of the highest flows in Japan: milky-white natural onsen water fed straight from the source, at one with the forest
Hokkaido
Livemax Resort Hakodate Greenpia Onuma
A natural onsen fed straight from the source in the embrace of nature, and true löyly
Hokkaido
Kitoushi Forest Kitoron
A forest retreat of authentic saunas and underground spring water from the Daisetsuzan range
Tokushima
Hotel Iya Onsen
A natural onsen at the bottom of the gorge, fed straight from the source and reached by the inn’s own cable car
Aichi
Tennomaru
A natural onsen in the sky overlooking the night lights of Mikawa Bay from 380 m (1,250 ft)
Nara
Shionoha Onsen Yamabatoyu
A hidden onsen in deep Yoshino where water from its own source flows into cedar-log baths with stunning views
Hokkaido
Hotel Taisetsu ONSEN&CANYON RESORT
A mountain resort with natural onsen fed straight from the source, never recirculated, and a sauna with spectacular views
Hokkaido
Aonobi Yuyu
An inn for soaking in Biei’s gorge scenery and a celebrated spring, 100% fed straight from the source
Fukuoka
Hotel Parens Onoya
Kyushu’s first tatami bath and a “double beauty bath” of two spring types
Hokkaido
Hokuten no Oka Lake Abashiri Tsuruga Resort
An onsen inn cradled by the romance of Okhotsk culture and the Yobito forest, with an authentic Nordic sauna and its own source
Miyagi
Matsushima Ichinobo
Skin-soft onsen water with a sweeping view of Matsushima Bay, plus automatic löyly
Kumamoto
Aso Baien SPA RESORT
An onsen resort among the largest in western Japan, with natural onsen water fed straight from the source and huge lava rocks
Hokkaido
The Lake Suite Konosumika
An infinity onsen that merges with Lake Toya and an authentic sauna with spectacular views
Ishikawa
Yamanaka Onsen Kajikaso
An inn of skin-beautifying waters, where the murmur of Kakusenkei and a hinoki-scented sauna ease body and mind
Toyama
Ogawa Onsen Motoyu Hotel Ogawa
A secluded mountain inn with natural onsen water fed straight from the source and a mysterious cave open-air bath
Niigata
Hotel Kinomezaka
Muikamachi Onsen and a rooftop open-air bath with sweeping views of the Echigo Sanzan and Mount Hakkai
Hokkaido
Grand Blissen Hotel Jozankei
Gorge views from every room: a luxurious break with onsen water from its own source and a bath in your room with a stunning view
Hokkaido
Jozankei View Hotel
An open-air bath in the sky 60 m up and six innovative saunas that stir the five senses
Hokkaido
Toya Sun Palace Resort & Spa
A semi-open-air bath at one with the views of Lake Toya, and a proper sauna where you pour your own löyly
Osaka
SPA&SAUNA SUISYUN Hattori Ryokuchi
A premium spa amid greenery, with a natural radon onsen fed straight from the source and three saunas
Shizuoka
Mori-no-Yu Kiranosato
An Izu-Kogen onsen inn in the embrace of old countryside, with private baths fed straight from the source
Hyogo
Kinosaki Maruyamagawa Onsen Ginka
An onsen inn whose open-air bath runs into the Maruyama River, so you feel you are floating on it
Hyogo
SPA TERRACE Shisui
A hideaway for grown-ups where you can savor natural Kinsen and Ginsen from the inn’s own source to your heart’s content
Tochigi
Oedo Onsen Monogatari Hotel Kinugawa Gyoen
An inn cradled by the Kinugawa River gorge, with a detached open-air bath, superb views and a restorative buffet
Chiba
Oedo Onsen Monogatari Kimitsu no Mori
An inn in Boso where an open-air bath in a starlit forest and an artificial onsen warm you to the core
Aomori
Hakkoda Hotel
A log-built resort embraced by virgin beech forest, with onsen water scented by Aomori hiba
Kagoshima
The Pulse Kirishima
Natural onsen water fed straight from the source, with views of the Kirishima mountains, and four semi-open-air private baths
Oita
Yufuin Baien GARDEN RESORT
A superb resort embraced by a natural onsen fed straight from the source with views of Mount Yufu, and gardens spread across 10,000 tsubo of grounds
Kumamoto
Yukyo no Hibiki Yusai
A Kurokawa valley inn with natural onsen water fed straight from the source and seven baths to explore
Kumamoto
THE ACONCAGUA RESORTS
A resort of spectacular views with the Aso panorama, sauna and natural onsen
Kumamoto
Gekkoujyu Kurokawa
A hilltop open-air bath with sweeping views, and in every room a bath fed straight from the source, all to yourself
Oita
Gekkoju Yufuin
Five onsen villas overlooking Mount Yufu
Oita
Yufuin Onsen Toshoan
A hideaway inn with in-room panoramic baths fed straight from the source and Mount Yufu’s views all to yourself
Tochigi
Oyama Omoigawa Onsen
A wild, spectacular open-air bath overlooking the Omoigawa River and an authentic Finnish sauna
Fukushima
Oedo Onsen Monogatari Higashiyama Grand Hotel
An Aizu onsen inn where seasonal scenery and natural chloride-spring water soothe you
Gunma
Oedo Onsen Monogatari Premium Matsunoi
An inn where you savor natural onsen water from its own source in a 10,000-tsubo Japanese garden and three open-air baths
Yamagata
Takamiya Mogamigawa Bettei Beni
A riverside inn with a spectacular view of the Mogami River, so close you could almost touch it
Miyagi
Yutomori Club
A natural onsen beside a mountain stream, fed straight from the source, and an authentic sauna
Tochigi
Oedo Onsen Monogatari Premium Hotel New Shiobara
A large onsen hotel with views of Shichigen Falls and a wide variety of baths to make your way around
Ishikawa
Manten no Tsujinoya
A gourmet inn where a vast 25,000-tsubo Japanese garden and a sodium sulfate spring from its own source put the heart at ease
Ishikawa
Matsusaki
A long-established onsen ryokan with open-air baths overlooking the Hakusan range and its signature alternating bathing
Kanagawa
Tenseien
A superb onsen inn with Hakone views and natural onsen water fed straight from the source
Yamagata
Miyamaso Takamiya
A long-established Zao inn with natural onsen water fed straight from the source and nine baths of different character