The town Sapareva banja is in the foothills of North-Western Rila. The present and the past of the resort town are linked with the curative mineral springs. The temperature of the water varies between 57o and 100° C and a 10 metres high gazer of 103.8° C, erupted recently in the process hydrological studies – the hottest spring in Bulgaria and extraordinary rare for Europe. Illness of the bones, joints and the locomotion system, as well as the peripheral nervous system can be treated with it.