1. Yudanaka Onsen is a traditional hot spring resort located in the town of Yamanouchi, Nagano Prefecture, Japan. It is renowned for its thermal waters and its proximity to the Jigokudani Monkey Park, where wild snow monkeys can be observed enjoying hot springs. An intriguing aspect of Yudanaka Onsen is its rich history that spans over 1,300 years. The discovery of the hot springs is attributed to a Buddhist monk named Gyoki, who valued the therapeutic nature of the springs. Subsequently, Yudanaka Onsen has evolved into a preferred destination for individuals in pursuit of relaxation and revitalization. The town emanates a traditional and rustic ambiance, characterized by quaint Japanese ryokans and small shops adorning its streets. Tourists can relish leisurely walks along the narrow lanes, delve into local shops, and savor indigenous culinary delights.