Misasa Onsen: Mysterious Hot Spring Boasting World-Class Radon Content

Misasa Onsen is a hot spring resort spreading along the Mitoku River in Misasa Town, central Tottori Prefecture, known as one of the world leading radium springs. With a history of about 860 years since its discovery, it has long been beloved as a therapeutic bathing site that heals body and mind, and as a spot for strolling through its atmospheric hot spring town.

Highlights

Misasa Onsen is an ancient spring said to have been discovered in 1164, according to a legend in which Okubo Samanosuke, a retainer of Minamoto no Yoshitomo, was told the location of the spring in gratitude for saving a white wolf. It is a radioactive spring containing among the highest concentrations of radon in the world, known for the idea of "hormesis," in which trace radiation is said to stimulate the body's metabolism (this is not a medically established treatment effect). As one of Japan largest radon hot spring areas, it has a deeply rooted therapeutic bathing culture, and many people come to stay to care for their bodies.

Along the Mitoku River spreads an atmospheric hot spring town, and the open-air bath Kawara-buro at the foot of the Misasa Bridge is a specialty that anyone can enjoy for free. The townscape lined with shooting galleries and retro eateries creates a somehow nostalgic and warm atmosphere.

Enjoying the Seasons

The hot spring can be enjoyed year-round, but winter with its elegant snow-viewing baths, and the fresh-green and autumn-foliage seasons, are especially fine. On clear-aired nights, strolling along the river to enjoy the beautiful starry sky is also recommended. Nearby Mitokusan Sanbutsu-ji is famous for the National Treasure Nageiredo, which clings to a sheer cliff, and is known as a sacred site of shugendo. You can experience worship by climbing a rugged mountain path, especially rewarding in the fresh-green and autumn-foliage seasons.

Access and Basic Information

Access is about 20 minutes by bus from Kurayoshi Station on the JR San in Main Line. It is also reachable by car from central Tottori City and the Yonago area, convenient as a base for San in sightseeing. The Kawara-buro is basically available 24 hours, though it may be closed during cleaning times.

Practical Travel Notes

As the Kawara-buro is a mixed-bathing format, wearing swimwear is the norm, and it may be reserved for women during certain hours. As it is an open location easily seen from the bridge, those who feel hesitant may prefer to use their inn indoor bath or a foot bath in town. While radioactive springs are considered suited to therapeutic bathing, avoid long soaks and be mindful to hydrate frequently. The climbing worship toward the Nageiredo of Mitokusan Sanbutsu-ji has safety rules such as requiring two or more people and designated footwear, so checking in advance is necessary.

A Word of Advice

Misasa Onsen is a renowned San in hot spring where abundant waters, a retro riverside townscape, and the sacred site of Mitokusan come together. Enjoy the therapeutic journey of resting body and mind slowly, while enjoying bath-hopping, foot baths, and evening strolls.

📚 Sources

This article is based on guidance on the history and water quality of Misasa Onsen, known as one of the world leading radium springs, tourist information for Misasa Town, on-site information on the riverside open-air Kawara-buro along the Mitoku River and the nearby Mitokusan Sanbutsuji with its national treasure Nageiredo, and information on the bus from JR Kurashiyoshi Station. The Kawara-buro has cleaning times and women-only hours. Bathing availability and the climbing-worship rules may change, so please confirm the latest details on the official sources before your visit.

Visitor Checklist

• Bathing note: The Kawara-buro is mixed and swimwear is standard; it is visible from the bridge, so use an inn indoor bath or a town foot bath if uncomfortable.
• What to bring: Avoid long soaks in the radioactive spring and rehydrate often.
• How to plan: Stay overnight to enjoy bath-hopping, foot baths, and an evening stroll.
• Safety note: The climbing worship to Nageiredo at Sanbutsuji has safety rules such as going in pairs and special footwear, so check in advance.
• Access: About 20 minutes by bus from JR Kurayoshi Station.

Practical Information for Your Visit

Here is the practical information for "Kawara-buro," the open-air bath that is the symbol of this hot spring town.

• Hours of use: 24 hours. However, bathing is not possible from 7:00 to 12:00 on odd-numbered days because of cleaning
• Fee: Free of charge
• Closing days: Open all year round
• Bathing arrangement: Mixed bathing. There is a simple changing area
• Access: About 20 minutes by local bus from JR Kurayoshi Station, getting off at the terminus "Misasa Onsen," then about a 3-minute walk / about 45 minutes by car from the "Yubara IC" on the Yonago Expressway via National Route 313 / about 60 minutes by car from the "Innosho IC" on the Chugoku Expressway via National Route 179
• Spring quality: radioactive sodium chloride spring, or radioactive simple spring. The source temperature is 60 to 70 degrees, and at facilities where you can bathe the average is around 41 degrees
• Day-use bathing: The hot spring town has 3 public bathhouses and 17 ryokan that accept day-use bathers
• Inquiries: Misasa Onsen Tourism Association, 0858-43-0431

* There is no officially published parking lot dedicated to Kawara-buro. It may be temporarily closed for events or filming, so please check the notices on the official website.

(Sources: Tottori Prefectural Tourism Federation "Tottori Tabi", Misasa Onsen Tourism Association official website)