Visit Oita

Tsukahara Onsen, located in Yufu City’s Yufuin area, is a well-loved hidden gem known for its rare and remarkable water quality. Its standout feature is its highly acidic spring, ranking among the most acidic in Japan. With a pH of 1.4, the water is rich in sulfur and acids, renowned for its antibacterial properties, benefits for skin conditions, and beautifying effects. The distinctive tingling sensation it provides is an experience unlike any other onsen.

Set on a highland with views of Mt. Yufu and Mt. Tsurumi, the onsen is surrounded by lush nature. Nearby is the Tsukahara Onsen Crater, a sulfur vent area that attracts visitors as a fascinating sightseeing spot. Here, you can witness plumes of steam rising from the source up close, offering a dramatic and almost otherworldly scene.

A visit to Tsukahara Onsen pairs perfectly with a day of exploring Yufuin or hiking Mt. Yufu. Spend your daytime actively sightseeing and then unwind with the tranquil atmosphere of this unique onsen.

With its rare strongly acidic water and breathtaking natural surroundings, Tsukahara Onsen offers a one-of-a-kind experience you won’t want to miss.