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Kaji Onsen, located in Nikko City, Tochigi Prefecture, is a beautiful hot spring town situated at the junction where the Ogawa River meets the Kinugawa River. The area is surrounded by dense, lush forests, offering a stunning landscape that changes beautifully with every season. The hot spring water is an alkaline simple spring, characterized by a gentle, soft texture that is very kind to the skin. The town features various traditional Japanese inns (ryokan) that provide deep relaxation amidst a rich natural environment.
The area has a long history, with a saying from the Edo period: "For wounds, go to Kaji; for burns, go to Kinugawa." This phrase highlights the long-standing reputation of Kการ Kaji Onsen as a premier destination for healing and physical recovery. For centuries, this culture of medicinal bathing has been deeply rooted in the local community and remains a significant part of its identity.

Around Kaji Onsen, you can discover several spots that showcase the magnificent artistry of nature. A primary highlight is Ryuo Gorge (Ryuo-kyo), famous for its dramatic rock formations and flowing water. Another must-visit is the Kinutateiwa Great Suspension Bridge, which offers a breathtaking panoramic view of the surrounding valleys. Near the hot spring town, facilities like the Kaji Onsen Fureai Bridge allow visitors to easily enjoy and observe the scenic river views.
Kaji Onsen offers a completely different face during every season. Autumn is particularly spectacular, as the surrounding mountains are transformed into a vibrant tapestry of red and gold, attracting many photographers and tourists. From the fresh greenery and flowing rivers of spring and summer to the serene, snow-covered landscapes of winter, there is always a unique natural beauty to witness.
There are various ways to enjoy the natural surroundings in this area. You can engage in activities such as river fishing or hiking through the scenic forest paths. There is also a Kaji Onsen fishing pond for a more structured experience. For those who want to experience the hot springs without staying overnight, many local inns offer day-trip bathing (higaeri nyoku) services.
Kaji Onsen is conveniently located near major tourist destinations in the Nikko area. You can easily combine a trip here with visits to Edo Wonderland (Nikko Edomura), Tobu World Square, or the Nikko Saru Gundan Theater. The proximity to natural landmarks like Ryuo Gorge makes it an ideal base for exploring the natural wonders of Tochigi.
When visiting the hot spring area, please keep the following in mind: