Hokkaido Tohoku Kanto Koushinetsu-Hokuriku Tohokai Kansai Chugoku Shikoku Kyushu

Secret Onsen is a database containing 129 onsen.

Because there are so many of them, we almost exclusively focus on 119 rotenburo (outside baths), with a special interest for 82 konyoku (mixed baths), located all around Japan


Click here for a map with all onsen (takes some time !)
or click on the map to focus on a specific region



PrefectureOnsenGeneral QuoteFeatures     (explanation of symbols)
Sakura Sakura Onsen ()   
Ishikawa-kenOyadani no Yu ()    
Ishikawa-kenYamazaki Ryokan (Iwama Onsen)    
Ishikawa-kenWakura Onsen Soyu (Wakura Onsen)  
Ishikawa-kenLamp no Yado (Yoshigawara Onsen)   
   Region : Hokkaido
HokkaidoSandan no yu - Takimi no yu (Iwaobetsu Onsen)    
HokkaidoAshi yu (Kawayu Onsen)   
HokkaidoHotel New yu no kaku (Kawayu Onsen)    
HokkaidoKotan (Lake Kussharo)     
HokkaidoSunayu (Lake Kussharo)  
HokkaidoWakoto Onsen (Lake Kussharo)  
HokkaidoTennen yukoro onsen (Niseko Hirafu)   
HokkaidoYamada onsen hotel (Niseko Hirafu)  
HokkaidoOnneto yu no taki (Onneto)     
HokkaidoKuma no yu (Rausu)    
HokkaidoDaiichi (Yoroshi Onsen)     
HokkaidoKaramatsu no yu (Yoroshi Onsen)   
   Region : Kansai
Hyogo-kenMaruki Ryokan (Takedao Onsen)   
Kyoto-fuGosho no Yu (Kinosaki Onsen)     
Kyoto-fuIchi no Yu (Kinosaki Onsen)    
Kyoto-fuJizo Yu (Kinosaki Onsen)  
Kyoto-fuKo no Yu (Kinosaki Onsen)   
Kyoto-fuMandara Yu (Kinosaki Onsen)  
Kyoto-fuSato no Yu (Kinosaki Onsen)    
Kyoto-fuYanagi Yu (Kinosaki Onsen)  
Kyoto-fuKurama Onsen (Kurama)    
Nara-kenKongo no yu (Gojo)   
Nara-kenYamabatoyu (Irinoha Onsen (?))   
Nara-kenTaki no yu (Totsugawa)   
Nara-kenChikurin-in (Yoshino)   
Nara-kenSakoya (Yoshino Onsen)   
   Region : Kanto
Gunma-kenChojukan (Hoshi Onsen)   
Gunma-kenHamaya ryokan (Kawafuru Onsen)    
Gunma-kenKawarayu   
Gunma-kenMountain View Lodge (Kusatsu Onsen)    
Gunma-kenNikawa no yu (Kusatsu Onsen)  
Gunma-kenOotaki no yu (Kusatsu Onsen)    
Gunma-kenSai no kawara (Kusatsu Onsen)   
Gunma-kenShirahata no yu (Kusatsu Onsen)  
Gunma-kenManza Kogen Hotel (Manza)    
Gunma-kenManza Prince Hotel (Manza)    
Gunma-kenManzatei (Manza)    
Gunma-kenShirane Onsen (Marunuma Kogen)   
Gunma-kenAnahara yu Toushuukan (Oigami)  
Gunma-kenGorokaku (Oigami)     
Gunma-kenHotel Kojokaku (Sarugakyo Onsen)     
Gunma-kenChuseikan (Shima Onsen)    
Gunma-kenChuseikan ryokan (Shima Onsen)  
Gunma-kenSekizenkan (Shima Onsen)    
Gunma-kenShima Grand Hotel (Shima Onsen)   
Gunma-kenShima Tamura (Shima Onsen)    
Gunma-kenYamaguchi Rotenburo (Shima Onsen)   
Gunma-kenShiriyaki Onsen  
Gunma-kenTakaragawa     
Kanagawa-kenTenzan (Hakone)    
Saitama-kenMiyako ryokan (Arakawamura)   
Tochigi-kenMomiji no Yu ()    
Tochigi-ken (Arayu Onsen)   
Tochigi-kenShirakaba (Arayu Onsen)   
Tochigi-kenIchiryuukaku honkan (Kawaji Onsen)   
Tochigi-kenMeotobuchi Onsen Hotel (Meotobuchi)   
Tochigi-kenKitanoyu Ryokan (Nasu)  
Tochigi-kenOomaru Onsen Ryokan (Nasu)   
Tochigi-kenYumori Tanakaya (Oami Onsen)     
Tochigi-kenHatcho yu (Okukinu Onsen)     
Tochigi-kenKani yu (Okukinu Onsen)     
Tochigi-kenNikkozawa (Okukinu Onsen)  
Tochigi-kenAzumaya (Shiobara)    
Tochigi-kenFudo no yu (Shiobara)    
Tochigi-kenHito no yado (Shiobara)   
Tochigi-kenIwa no yu (Shiobara)   
Tochigi-kenWarakuyuen (Shiobara)  
Tochigi-kenYuppo no Sato (Shiobara)  
Tochigi-kenHonke Bankyu Bankyu Ryokan (Yunishigawa)     
Tokyo-toHamanoyu (Oshima)    
Tokyo-toOshima Onsen Hotel (Oshima)    
Tokyo-toAshitsuki (Shikinejima)   
Tokyo-toJinata (Shikinejima)    
   Region : Koushinetsu-Hokuriku
Nagano-kenGoshiki no yu (Goshiki Onsen)     
Nagano-kenIchi Youkan (Nagano city)    
Nagano-kenAwanoyu (Shirahone Onsen)    
Nagano-kenIkenotaira hotel (Shirakabako)    
Nagano-kenFukeikan (Yamada Onsen)    
Nagano-kenRedwood Inn (Yamada Onsen)    
Nagano-kenTaki no yu (Yamada Onsen)     
Nagano-kenJigokudani (Yudanaka Onsen)   
Niigata-kenOyado Honjin (Naeba)   
Niigata-kenHotel Sporea (Yuzawa Onsen)   
Niigata-kenToei hotel (Yuzawa Onsen)   
Yamanashi-kenAkaishi (Akaishi onsen)   
Yamanashi-kenFujihokuroku onsen (Fujihokuroku)   
Yamanashi-kenUnposo (Sakeishi Onsen)   
   Region : Kyushu
Kagoshima-kenEbino Kogen Rotenburo (Ebino Kogen)
Kagoshima-kenEbino Kogen-so (Ebino Kogen)    
Kagoshima-kenKaichu Onsen (Hirauchi)    
Kagoshima-kenRyokan Shoen (Kirishima Onsen)   
Kagoshima-kenManten (Yakushima Airport)    
Kagoshima-kenYudomari Onsen (Yudomari)  
Kumamoto-kenHozantei (Kurokawa Onsen)     
Kumamoto-kenKiyashiki (Kurokawa Onsen)    
Kumamoto-kenOku no Yu (Kurokawa Onsen)     
Miyazaki-kenSheraton Grande Ocean Resort (Miyazaki)   
Oita-kenHoyoland (Beppu)    
Oita-kenKaihin Sunaba (Beppu)    
Oita-kenNabeyama no Yu (Beppu)   
   Region : Okinawa
Okinama-kenIriomote Shima Onsen (Iriomote Shima)    
   Region : Tohokai
Gifu-kenFunsenchi (Gero Onsen) 
Gifu-kenRyokan Ontake (Nigorigo Onsen)  
Gifu-kenOkuhida Garden Hotel Yakedake (Shin-Hirayu)   
Gifu-kenShin-Hodaka no Yu (Shin-Hodaka)   
Gifu-kenYarimikan (Shin-Hodaka)    
Shizuoka-kenAkazawa onsen rotenburo (Akazawa)  
Shizuoka-kenFujiyoshi (Futo - Ito-City)     
Shizuoka-kenIdeyusou (Ishibe Onsen)    
Shizuoka-kenHotel Ito Powell (Ito Onsen)  
Shizuoka-kenHeiroku Jizo (Matsuzaki) 
Shizuoka-kenSawada Koen (Nishina)     
Shizuoka-kenAmagiso (Oodaru Onsen)    
Shizuoka-kenDokko no Yu (Shuzenji Onsen)   
Shizuoka-kenYumotokan (Yugashima Onsen)    
   Region : Tohoku
Akita-kenGoshogake Onsen (Hachimantai plateau)    
Akita-kenTamagawa Onsen (Hachimantai plateau)     
Akita-kenTazawako kogen resort hotel ne (Mizusawa Onsen)   
Akita-kenTsuru no yu (Nyuto Onsen)   
Aomori-kenSukayu (Hakkoda)    
Aomori-kenAoni Onsen (Kuroishi Onsen)    
Fukushima-kenNumajiri Yumoto (Numajiri Onsen)     
Yamagata-kenShinzaemon no yu (Zao Onsen)    
Yamagata-kenZao Dairotenburo (Zao Onsen)