Zao Onsen – Hanare-yu Hyaku-happo

One of the highlights of hiking Mt. Zao is, of course, Zao Onsen. I was really looking forward to soaking in its strongly acidic, milky-white waters with a rich sulfur smell—something I hadn’t experienced in a while. After descending to Jyuhyo Kogen Station and taking the ropeway down to Zao Sanroku Station, I looked for a nearby bath and found Hanare-yu Hyaku-happo. With its wooden building typical of Zao Onsen and its strongly acidic waters, it looked atmospheric and promising.

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Rishiri Onsen – Rishiri Fureai Onsen

For my first visit to Rishiri Island, I planned to stay for several days, so I wanted to choose a hotel with a hot spring. While researching, I learned that there is only one ryokan on Rishiri and Rebun Islands that offers 100% free-flowing hot spring water, and that this spring is considered one of the finest bicarbonate springs in Japan. With that, staying at Hotel Rishiri was an easy decision.

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Mochimune Minato Onsen

I had some errands to run and found myself back in Mochimune for the first time in a while. My grandparents used to live nearby, so I often visited the area as a child and have fond memories of playing in the ocean at Mochimune—it’s a nostalgic place for me. While there, my family, who had arrived ahead of me, suggested we go to the local onsen. I asked, “Wait, there’s an onsen here?” and they replied, “Yeah, it’s been around for quite a while now.” I was surprised—I’ve been back to my grandparents’ house several times in recent years, but somehow I never knew about it…

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Yuya Onsen – Horai Yuyu-Arena

Yuya Onsen in Shinshiro, Aichi, is a historic hot spring said to have been discovered 1,300 years ago by the ascetic monk Rishu Sennin, who founded the nearby Hōrai-ji Temple. Its source, called “Hōekisen,” is famed as a therapeutic spring believed to cure all kinds of ailments. I came across Hōrai Yuyu Arena and decided to give it a try right away.

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Nagato Onsen – Yasuragi-no-Yu

On the way back from a hike to Mt. Utsukushigahara, I did what I always do—look for a good hot spring. That’s when I came across Nagato Onsen Yasuragi-no-Yu, known for its therapeutic bōshō-sen (sodium sulfate spring). Conveniently located next to a roadside station, it seemed like an easy stop.

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Tennokawa Onsen – Kigi-no-Yu

For my hike up Mount Hakkyo, I stayed in Tenkawa Village, a quiet place with several hot springs. Near my lodging, I could hear warblers singing by the river, along with the gentle flow of water and the occasional call of kajika frogs — it was such a peaceful and relaxing atmosphere. Encouraged by my host, I decided to visit a nearby hot spring, Tennokawa Onsen – Kigi-no-Yu.

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Michinoku Reisen – Yawaragi-no-yu

On Saturday, I suddenly decided to take a day trip to Koriyama. While riding the Shinkansen, I found out that Miharu Takizakura, one of Japan’s three great cherry trees, was relatively close by and in full bloom. I made it the main destination of my trip. As usual, before heading home, I started looking for a hot spring. One place caught my eye — Michinoku Reisen Yawaragi-no-Yu. It seemed a little mysterious, but I couldn’t resist checking it out.

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Aso Onsen

I spent some time touring the Miyagawa-Kahadakyo cycling route (part of the Japan Eco Track) at a relaxed pace. Searching for a hot spring to recover from the ride, I found Aso Onsen. What caught my eye online was the tea-colored water and the way the mineral deposits had built up in wavy layers along the rim of the bath. I felt an instant “This is it!” moment.

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Anan Onsen – Kajika no Yu

I occasionally visit Iida and Komagane in Nagano for hiking and sightseeing. On my way back, I often take the local roads south to Hamamatsu, stopping by roadside stations along the way. One of the hot springs I had always noticed but never visited was Anan Onsen – Kajika no Yu. I had been curious about it, but I usually preferred soaking in a hot spring closer to Hamamatsu. This time, after my cycling trip, I decided to finally stop by and soothe my tired body.

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