Shuzenji Onsen — Historic Temple Town Hot Springs

Shuzenji Onsen (修善寺温泉) is a historic hot spring town in the heart of the Izu Peninsula, founded 1,200 years ago when Buddhist monk Kobo Daishi struck the Katsura River with his staff and created the Tokko-no-yu hot spring. The town preserves traditional onsen atmosphere with willow-lined river walks, bamboo forests, vermillion bridges, and ryokan offering kaiseki meals and private rotenburo baths.

The town's centerpiece is Shuzenji Temple, a Soto Zen temple dating to 807 AD, surrounded by maple trees that create spectacular autumn colors (November). The compact downtown allows walking between temple, river, public bathhouses, and shopping streets within 15 minutes. Shuzenji represents traditional Japanese onsen town aesthetics — slower-paced, quieter, and more culturally immersive than resort-style Atami.