Okuwa Onma Onsen Rakuchin-no-yu is a super sento in Okuwa fed by a coffee-coloured moor hot spring, with marble indoor tubs, a large open-air bath with a TV, pot baths and family baths. Its far-infrared sauna is built with ocher clay, diatomaceous earth and rock salt. Adults 850 yen; open 8:00 to 23:30 (last bath entry 22:50).