Takaragawa Onsen found its current shape in the Taisyou age when people visited hot spa bath to cure their diseases and accommodation facilities began to be established. However, traffic was bad at the time and only visit was available through roads from Mimakami. Only industry at the time was forestry and truck transporting the woods was the only transportation method. The modern development came near the end of 20 years in the Syowa age when series of dam construction began bringing in electricity through the constructed roads. The main hall was established after 2 years of major construction in 1955 forming the hot spa inn followed by supplementary facilities.