Sana Mane | サナ・マネExperience the architectural wonder of Sana Mane's unique sauna, "Sauzae" on Naoshima Island in Kagawa, Japan.
Inazumi Limestone Cave | 稲積鍾乳洞Immerse yourself in the Inazumi Limestone Cave, where visitors can enjoy a tent sauna then swim in the waters underneath a limestone cave.
Kannawa Mushiyu | 鉄輪虫湯Experience Kannawa Mushiyu where guests enjoy a steam bath by laying on top of "Sekisho" (a medicinal herb) in Beppu, Japan.
Ibusuki Hakusuikan | 指宿白水館Immerse yourself in volcanic heated sand at the Kagoshima Sunamushi Onsen - Ibusuki Hakusuikan.