Situated at the foot of the Ossogovska Mountain, Kyustendil (ancient Pautalia) is one of Bulgaria's best known clmatic and spa resorts. The climate is temperate continental with a Mediterranean influence.

The resort's main curative factors are its numerous_mineral springs with a temperature of 71°C to 73°C, characterized as sulphide, silicic, fluorine, hyperthermal and slightly mineralized, and the curative pest which is rich in humic acids and organic substances.

Indications for treatment: chronic inflammatory conditions of the joints, disturbances of the peripheral nervous system, a number of diseases of the reproductive system and sterllity. Comprehensive treatment includes procedures with mineral water and peat, electric and light paraffin applications, curative massage, reflexotherapy, laser acupuncture and kinesitherapy.