Amami Onsen is a tranquil hot spring destination nestled in the mountains of Kawachinagano, Osaka. One of its most distinctive features is Nanten-en, a historic hot spring inn whose main building was designed by the Tatsuno-Kataoka Architectural Office, founded by renowned architect Kingo Tatsuno, who was also involved in the design of Tokyo Station.
The building combines traditional Japanese architecture with elegant Western-inspired modern elements. Its sukiya-style irimoya-zukuri design and spacious grounds with a Japanese garden create a unique atmosphere where visitors can experience the beauty of traditional Japan.
In 2003, the main building was registered as a Nationally Registered Tangible Cultural Property, recognizing its architectural and historical value.
Nanten-en was originally the annex of Ohama Shioyu, a bathing facility in Sakai City. After the annex was destroyed by the Muroto Typhoon, the building was relocated to Amami. It was initially used as an annex of Matsumushi Kadan, a traditional restaurant in Abeno, Osaka City.
In 1949, it reopened as the hot spring inn Nanten-en. The large two-story wooden building features a distinctive fusion of Japanese traditional design and Western modern influences, making it a valuable example of early modern Japanese architecture.
The property covers approximately 3,000 tsubo, or about 9,900 square meters, and includes a beautifully landscaped Japanese garden. Inside the registered cultural property, visitors can experience an atmosphere reminiscent of a bygone era of Japan.
The area around Kimi Pass has long been used by pilgrims traveling to Mount Koya. During the Northern and Southern Courts period in Japanese history, the chief priest of nearby Nagatanihachiman Shrine established a therapeutic bathing site for people suffering from poor health. The hot spring soon became well known.
After Nagatanigokurakuji Temple was established, visitors traditionally stopped there to pray before continuing their journey to Mount Koya. The hot spring consequently became known by names such as Gokuraku Onsen, meaning “Paradise Hot Spring.”
However, the shrine was eventually destroyed by fire, and the nearby bathing facility known as Gokuraku-yu also burned down. The site was never rebuilt and eventually ceased to operate, leaving only archaeological traces behind.
In 1935, an old site plan of Amami Onsen was discovered. The discovery sparked renewed interest among local residents in reviving the area’s hot spring tradition.
This movement eventually led to the opening of Nanten-en as a hot spring inn in 1949. Today, the historic building and surrounding garden continue to preserve the atmosphere of this mountain retreat.
Amami was once a lively stopping point for travelers heading toward Mount Koya. Today, the area is surrounded on all sides by the rich natural landscapes of the Kongo-Katsuragi mountain range.
With its historic architecture, traditional Japanese garden, hot spring atmosphere, and connection to the ancient pilgrimage routes, Amami Onsen offers visitors a peaceful opportunity to experience both the natural beauty and cultural heritage of the mountains of Osaka.
1 minute walk from Amami Station on the Nankai Koya Line