We are a resort in the Central Idaho Mountains featuring natural thermal springs that heat our hot tubs, rental cabins, and steam sauna facilities. Our springs are one of only three in the state of Idaho that are sulphur free, having no extra odor or after taste. That makes these rejuvenating mineral waters perfect for a long soak after a relaxing day exploring the surrounding mountains and rivers. Twin Springs offers all of the outdoor activities that can only be found outside the city limits! Conveniently located on the Middle Fork of the Boise River, Twin Springs is a short drive from Boise.