Nanki-Katsuura Onsen is located within
Yoshino-Kumano National Park and Nanki-Kumano Geopark. The area surrounding Nanki-Katsuura Onsen has a very long history, and many of the temples nearby are protected as the
Sacred Sites and Pilgrimage Routes in the Kii Mountain Range. The onsen town itself, which dates back to the
Edo Period, has more than one hundred springs overlooking the
Pacific Ocean. These springs are scattered among the rugged terrain, including a peninsula known as and an island known as . Most
ryokans are only accessible by boat from Katsuura Harbor. Aside from its hot springs, Nanki-Katsuura Onsen is also known for
tuna. Nanki-Katsuura Onsen has a character within Onsen Musume named voiced by Maya Yoshioka. == Transportation ==