Issan Hot Spring

Issan Hot Spring [以山熱些 いっさん・れいじょう] is a hot spring resort located in the city of Yonzu, Mikei Prefecture. Alongside the famous Niraka resort in Omiya, Issan is one of the most popular hot springs in the prefecture and can attract over 500,000 visitors a year.
It is said that the Issan spring was first developed into a holiday destination for high-ranking officials of the Omiya clan in the 13th century, and later was a favoured resort of the manza and leader of the Kantonese Enlightenment, Yūtei no Hōsō.