Ryujin Onsen: A Mountain-Village Hidden Spring Ranked Among Japan's Three Beauty Baths

Ryujin Onsen, bubbling beside the Hidaka River flowing through a mountain valley at about 400 meters elevation in Ryujin Village, Tanabe City, Wakayama, is a celebrated spring counted among Japan's Three Beauty Hot Springs alongside Kawanaka Onsen in Gunma and Yunokawa Onsen in Shimane. It is a historic spring said to have been discovered by the ascetic En no Gyoja and later spread by Kobo Daishi, and successive lords of the Kishu Tokugawa family are said to have come for cures. The inns Kamigoten and Shimogoten, named for their lordly connections, remain to this day. Its smooth-feeling water and the pastoral mountain-village scenery, cradled by deep mountains, gently soothe the body and mind of every visitor.

Highlights: The Beauty Bath That Smooths the Skin

The reason Ryujin Onsen is called one of Japan's Three Beauty Hot Springs lies in its distinctively smooth water. The sodium bicarbonate spring has a silky feel and is known for gently removing old keratin and leaving skin moist and smooth. It is especially popular with women for the silky feel after bathing. Soaking slowly in this rich spring amid the quiet of the deep mountains eases everyday fatigue and offers a moment of heartfelt relaxation.

A Pastoral Mountain Village by the Hidaka River

Another charm of Ryujin Onsen is the pastoral mountain-village scenery cradled by deep mountains and the clear Hidaka River. The hot spring quarter is wrapped in a stillness far removed from bustle, where you can pass unhurried time listening to the murmur of the stream and birdsong. In the seasons of fresh greenery and autumn foliage, the surrounding mountains take on beautiful colors, and riverside open-air baths let you enjoy the natural beauty of each season. Nearby scenic drives such as Gomadan-yama and the Koya-Ryujin Skyline can be enjoyed together with a tour of the grand natural scenery.

Enjoying the Seasons

Ryujin Onsen can be enjoyed year-round, but early summer with its brilliant greenery and autumn (roughly late October to November), when the mountains take on color, are especially recommended for their natural beauty. Along the higher-elevation Koya-Ryujin Skyline, the foliage arrives earlier than in the valley. Summer is cool and pleasant as a retreat, and in winter the bath amid snowy scenery is exceptional. Soaking in the water, you can enjoy the changing face of the mountain village through the four seasons.

Access and Basic Information

A car is convenient; from the direction of Koyasan, the route via the Koya-Ryujin Skyline (National Route 371) is popular as a scenic drive, taking roughly an hour by car from Koyasan. By public transport, take the Ryujin Bus from JR Kii-Tanabe Station on the Kisei Main Line, but service is infrequent and the journey is long, so checking the timetable in advance is reassuring. The Ryujin Village area lies within the Koya-Ryujin Quasi-National Park and is favored as a destination combining mountain driving with hot springs.

Practical Travel Notes

Ryujin Onsen is a spring town dotted with quiet mountain inns, some of which accept day-use bathing. Savor the famous beauty bath at a shared bathhouse or an inn's bath. As the Koya-Ryujin Skyline is a mountain road, those unaccustomed to driving, and everyone in winter, should watch road conditions. At high elevation, mornings and evenings are cooler than in the valley, so a layer is reassuring even in summer. Nearby Gomadan-yama is a notably high mountain, and the area has forest parks and viewpoints suited to a stop for hiking or driving. Mobile-phone reception can be weak in some sections, so confirm your route in advance.

A Word of Advice

Ryujin Onsen is not a flashy tourist spot but a place for savoring the water itself. Soaking slowly in the silky bath and listening to the murmuring river and birdsong: that quiet time is the greatest treat. Staying overnight and enjoying the mountain-village bath, which shows different faces morning and night, is recommended. If touring together with Koyasan, adding the scenic drive along the Koya-Ryujin Skyline greatly enhances the trip.

📚 Sources

This article draws on official information from the ryokan and public baths of Ryujin Onsen and the Ryujin Onsen tourism association, information from Ryujin in Tanabe, and on-site signs along the Koya-Ryujin Skyline. Day-use bathing hours and fees, road conditions on the skyline, and bus timetables may change, so please confirm with the official information of each facility or the tourism association before your visit.

Visitor Checklist

• How to get around: This onsen has scattered single-inn ryokan in the mountains, where you can enjoy the beauty waters at public baths or inn baths
• Access note: A car is convenient; from Koyasan it is about one hour via the Koya-Ryujin Skyline, and road conditions need care in winter
• What to wear: At high elevation the mornings and evenings are colder than the lowlands, so an extra layer is reassuring even in summer
• Booking tip: Some facilities accept day-use bathing, so check the hours in advance
• Touring tip: It pairs well with scenic drives around Gomadanzan and the Koya-Ryujin Skyline