There was yukaku (a red-light district) in a district of Japanese Inn town before the war, which was common in the place where a starting point for a climb of a mountain which women were not allowed to enter was.
全国的に女人禁制の山岳への登山口にはよくみられたことであるが、戦前まで旅館街の一部地域に遊郭の機能を有していた。