Hissar is situated 140 km away from Sofia, at an altitude of 360 m above the sea level, not far from the famous Valley of Roses, amidst a real abundance of curative mineral waters - 22 springs have been found in this area! The resort has an old history - even the ancient Romans knew well the curative properties of the water and today the town has more than 4 km of Roman walls and architecture remains. During the age of the Roman Empire, the town, called Augusta, was a wealthy healing centre with Emperor's palaces, wide stone streets, marble baths, statues of Roman Gods and exuberant vegetation. The mineral water is light, clear, colourless, and tasty. It is slightly mineralized, hypo- and hyper-thermal, with a predominance of hydrocarbonic, sodium, sulphate and fluorine ions, as well as substantial amounts of radioactive gas. The radioactive emanation is 10-165 Em, pH - 7.6 - 9.02 and over 20 microelements. The acid content - 200 - 270 mgl.

The Region of Kyustendil is situated in the South-Western part of Bulgaria, extends over an area of 3084,30 km². (constituting 2,7% of the total territory of the Republic of Bulgaria), and has a population of 173 889. It borders the Regions of Sofia, Pernik and Blagoevgrad, while to the west, its limits coincide with the state borders between Bulgaria and the Republic of Macedonia, and Bulgaria and the Republic of Serbia. Kyustendil has managed to preserve its historical, ecological and cultural heritage. It is a contemporary Bulgarian administrative center, whose future is mostly seen in the development of cultural tourism, and modern rehabilitation resort centers by the hot mineral water springs.

Velingrad is one of the most popular Bulgarian spa treatment resorts. It is situated in the south of the country, in the Rhodopes Mountain, some 130 km away from Sofia and 85 km from Plovdiv, at an altitude of 745 m above the sea level. The climate there is mild and good for spa treatment during the whole year. The resort is rich in mineral waters, which cure diseases of the respiratory organs, neuralgic and functional diseases and sterility, diseases of the locomotory system after rheumatism and others. Not far from the resort is the high mountainous place Yundola with wonderful conditions for ski sports, especially for the winter disciplines like ski racing and biathlon. With its abundance and variety of mineral waters, Velingrad occupies first place in Bulgaria. The richest hydrothermal deposits are to be found here. Its water resources amount to about 160-175 l/sec. The total number of mineral sources is about 80. The water temperature varies- 42-43 deg С in Chepino, 28- 63 deg C in Ludgene, 84-88 deg C in Kamenitza and 94 deg C in Draginovo.