Okuhida Onsen Gorge Open-Air Bath Cluster

Rotenburo culture in Japan is rooted in philosophy integrating hot springs with natural scenery. The bathing experience of feeling seasonal changes, appreciating landscape, and engaging with weather connects to Taoist and Zen nature philosophies. While some regions saw decline during modernization, contemporary wellness trends have revived appreciation for this tradition.

Akiu Onsen in Sendai, Miyagi Prefecture, uniquely integrates the Akiu Falls landscape with hot spring experience. Waterfall-view open-air baths allow simultaneous experience of flowing water sounds and thermal sensation. It exemplifies the relationship between Japanese onsen and landscape, offering integrated sensory bathing.

Five hot spring towns at the foot of the Northern Alps. Said to have the most open-air baths in Japan, its outdoor baths overlooking 3,000m peaks offer breathtaking scale.

Open-air bathing experiences at distinctively colored hot springs in Beppu, such as the Blue Hell, accessible to tourists as part of the Hell Tour. Many facilities offer authentic soaking while functioning as tourist attractions, exemplifying the diversity of Japanese hot spring culture and tourism evolution. Used by approximately 1 million visitors annually.

An open-air bath culture exemplified by nine remote mountain onsen inns in the Oku-Okhotsk valley, Nikko, Tochigi. These intimate facilities offer rustic rotenburo seamlessly integrated with nature. Guests experience bathing amid snow in winter, cherry blossoms in spring, and autumn foliage—embodying Japanese onsen aesthetics. Its difficult access preserves its character as a hidden gem in serene wilderness.

A collective term for six hot spring communities nestled in the northern Hida Mountains near Takayama, Gifu Prefecture. Comprises Shinhotaka, Tochiao, Fukuji, and Shinuhotaka onsen plus three distinctive rotenburo areas. Despite its remote mountain setting, settlements spread along the Kameda River. Particularly beautiful during autumn foliage season, attracting hikers and onsen enthusiasts.

Akiu Onsen in Sendai, Miyagi Prefecture. Waterfall scenery of the Hirose River integrates with the hot spring, linking landscape aesthetics with therapeutic bathing. Beloved by Edo-period literati, developed pilgrimage-style tourism combining waterfall visits with onsen bathing. Modern gorge-side rotenburo experiences blend with spectacular waterfall views. Integration of natural beauty with therapeutic function represents a paradigmatic model of Japan's picturesque tourism culture.

Lake Kawaguchi Onsen in Fujikawaguchiko, Yamanashi Prefecture, is renowned for its fusion of hot spring bathing and Mt. Fuji scenery. Many facilities feature open-air baths designed for viewing Mount Fuji, merging visual landscape experience with thermal therapy. It exemplifies commercialized rotenburo culture.