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Nanki-Katsuura Onsen is a renowned hot spring area located in the southern part of Wakayama Prefecture. Historically, it consisted of different springs such as 'Iso-no-yu' and 'Akashima Onsen,' but it is now widely known as a single, unified hot spring destination. The development of its many hot spring sources progressed through advanced drilling technology starting in the Taisho era. The area has grown alongside the development of local infrastructure, such as the designation of the Yoshino-Kumano National Park in 1950 and the electrification of the Kisei Main Line in 1978. Today, it serves as a vital hub for travelers combining cultural heritage with natural beauty, given its proximity to the UNESCO World Heritage site, 'Sacred Sites and Pilgrimage Routes in the Kii Mountain Range.'
The history of this region is ancient, with the origins of the hot springs dating back many centuries. During the Taisho era, a record exists of the head of the Kii Tokugawa family, Yoritomo Tokugawa, visiting the area. It is said that upon bathing in a cave spring, he remarked that the experience was so wonderful he would 'forget to return home,' which became the origin of the name 'Bokido' (the Cave of Forgetting to Return). In the 1960s, the area was a popular destination for honeymooners. In recent years, with the rising global interest in World Heritage sites, Nanki-Katsuura has solidified its role as a destination that offers deep historical context alongside its hot spring culture.
Around Nanki-Katsuura Onsen, there are numerous spots where you can feel the essence of nature and history. A representative attraction is 'Bokido,' a unique hot spring facility located inside a natural cave. Beyond the hot spring facilities themselves, the stunning coastline and natural environment are major draws. Additionally, this area is famous for its food culture, particularly the tuna-cutting shows and the abundance of fresh seafood, allowing visitors to enjoy a perfect combination of hot springs and gourmet dining.
You can enjoy the hot springs in Nanki-Katsuura throughout the entire year. The surrounding natural environment and sea conditions change beautifully with the seasons. For example, summer brings more activities related to ocean leisure, while winter is the peak season to enjoy seasonal delicacies like premium tuna. Regarding timing, in addition to sightseeing during the day, many visitors enjoy the tranquil atmosphere of the hot spring town at night after enjoying dinner at their accommodations.
In this area, you can enjoy more than just soaking in hot water. Nanki-Katsuura serves as an excellent starting point for hiking and pilgrimages along the Kumano Kodo, a World Heritage-listed trail. Due to its proximity to the coast, you can also enjoy a relaxing stay while gazing at the ocean scenery. Your itinerary can easily blend relaxation in the hot springs with exploring the surrounding natural landscapes and historical-cultural heritage.
Nanki-Katsuura Onsen is the gateway to many significant sites related to the 'Sacred Sites and Pilgrimage Routes in the Kii Mountain Range.' Key destinations include the Kumano Kodo pilgrimage routes, Daimon坂 (Daimon-zaka), Nachi Falls, Kumano Nachai Taisha Shrine, Ogurizaki/Seigantoji Temple, Ki-no-Matsushima islands, and the Smoke Signal Peninsula. These areas are characterized by lush greenery and historic structures, forming a perfect travel route that connects natural scenery with cultural heritage.
When using the hot spring facilities, it is recommended to prepare a yukata (casual kimono) and a towel. If you plan to walk the Kumano Kodo or explore natural areas, comfortable walking shoes and practical clothing are essential. Regarding payments, please note that some facilities may only accept cash, while others accept credit cards. While English information may be available at major facilities and tourist information centers, it is highly recommended to check and make reservations in advance for specific experiences or accommodations.