Garden Spa Tokachigawa Onsen Roadside Rest Area

This roadside rest stop (michi-no-eki) centers on Spa Kohaku, a swimsuit-required bathing complex where men and women share the same indoor pool and garden-set outdoor bath in bathing wear rather than separately. The water is moru onsen (モール温泉), the plant-derived hot spring Tokachigawa Onsen is known for: tea-brown and smooth on the skin. The outdoor bath has a shallow end, 60 to 90 centimeters deep, where kids can play, and there is a mist sauna that warms the room with misted onsen water instead of dry heat. Washing happens in private shower booths by the lockers rather than open wash stations, and bathing wear and a bath towel are lent free for the first piece. Past the baths, the building holds a free foot bath, four small food counters, a market selling local Tokachi goods and moru onsen skincare, a workshop space, and a dog run outside. It feels more like a resort rest stop than a bathhouse: wood-built, high-ceilinged, and used mostly by day-trippers passing through the hot spring town along the Tokachi River rather than guests staying overnight.