A Hidden Hot Spring at the Foot of Inunakisan, Steeped in the Loyal Dog Legend
Inunakiyama Onsen: Osaka’s Closest Hot Spring Village to the World, Renowned for Its Beauty Baths
Inunakisan Onsen, located in Ōki, Izumisano City, is the only hot spring village in Osaka Prefecture. The name “Inunakisan” originates from the legendary tale of a loyal dog associated with this historic mountain, which is also known as a sacred site for Shugendō (Japanese mountain asceticism). The name Inunakisan Onsen is derived from this revered mountain.
Nestled in the rich natural surroundings of Inunakisan like a hidden retreat is Yamanoyu, the first officially registered hot spring in Osaka. Operated by the owner who discovered the hot spring source, Inunakisan Motoyu Onsen offers a rare experience with natural, free-flowing hot spring water directly from the source into the baths.
To reach Inunakisan Motoyu Onsen Yamanoyu, take Prefectural Route 62. The entrance can be tricky to find, so keep an eye out for the signboard.
Inunakisan Motoyu Onsen Yamanoyu
See detailed page
Additionally, this hot spring supplies water to nearby Inunakisan Onsen Ryokan Fudouguchi-kan and Inunakisan Onsen Minamitei, making it the true original source of the onsen village.
Founded in 1932 (Showa 7), the historic Inunakisan Onsen Fudouguchi-kan is famous for its guest rooms with private hot spring baths, offering stunning views of the changing seasons in Inunakisan.
Inunakisan Onsen Fudouguchi-kan
See detailed page
Established in 1926 (Taisho 15), Inunakisan Onsen Minamitei is a long-standing tourist ryokan known for its soothing hot springs and the heartfelt hospitality provided by the proprietress and staff.
Inunakisan Onsen Minamitei
See detailed page
The hot spring water, slightly milky with simple sulfur springs, is renowned for its skin-smoothing properties. It’s often referred to as a “beautifying hot spring” and attracts visitors from far and wide. While soaking in the onsen, you can enjoy the breathtaking scenery of the mountains throughout the seasons—particularly the vibrant autumn foliage and snow-covered landscapes in winter, which leave a lasting impression on visitors.
The area also features historical sites like Shipporyu-ji Temple and scenic walking trails. Be sure to explore these attractions along with your hot spring experience.