
Bulgaria abounds in hydrothermal resources, unique in composition (over 600 mineral springs with temperatures between 10 C and 102 C) and known for their curative properties even in antiquity. The climate is healthy and has a marked curative effect in certain regions of the country. The varied relief. warm sea, fresh verdure and mountains air, combined with various treatment procedures, exert a favourable influence on a number of ailments.
The health resorts are situated in some of the most picturesque places of Bulgaria and in the mbalneological treatment is in combination with climate treatment and physical therapy.
The best known ones are
SANDANSKI beneficial to the treatment of bronchial asthma,
HISSARYA known for the successful treatment of urological and liver diseases
VELINGRAD for non-specific conditions of the respiratory tract, disturbances of the locomotory system, neurological disorders, gynaecologycal complaints, mild forms of diabetes, obesity, and Kyustendil - for conditions of the bones, joints and tendons, disorders of the nervous system, cardiovascular diseases, disturbances of the reproductive system and sterility.
Internationally known climate therapy and health resort. It is situated in the valley of the Sandanska Bistritsa river, at the foot of the south-western stopes of Pirin.
Without exaggeration the climate of Sandanski can be described as unique. Throughout the year, air temperatures are higher than anywhere else in the country. The average annual temperature (14.7C) is the highest in Bulgaria. The winter is mild and short, and the autumn - long and warm. The relative air humidity is low (66 per cent), and the annual duration of sunshine is no less than 2,436 hours. Sandanski has the lowest annual rainfall in Bulgaria (127 litres per square metre) and almost no foggy days. The air is remarkably clean and pollution free.
Apart from its natural beauty, lush vegetation and remarkably wholesome climate, the resort also features a multitude of mineral springs. The wells and natural springs situated in two thermal zones have a total flow of 1,500 l/min. The mineral waters have a nearly uniform chemical composition but contain varying quantities of metasilicic acid and fluorine. The waters are clear , colourless, odourless with a pleasant taste: silicic (containing 71 to 135 mg of metasilicic acid per litre), slightly fluoric (3.2 to 6.5 mg of fluorine per litre), hyperthermal (42 to 81C), slightly mineralized, containing sodium hydrocarbonates and sulphates, with a pH value ranging from neutral to mildly alkaline (pH 7.2 to 8).
This remarkable combination of balmy, health-giving weather and curative mineral waters makes Sandanski the perfect place for modern science-based climatotherapy, spa treatment, rehabilitation, primary and secondary prophylactics and recreation.
Specialized in the treathment of upper respiratory tract and lung deseases of non-tubercolosis type and of inflammation degenerative diseases of the joints.
The health resort of Hissar is situated in the centre of Bulgaria, in the southern folds of Sredna Gora Mountain, 42 km north of Plovdiv (the second biggest town in the country) and 160 km east of Sofia
Natural features
# Curative mineral water. There are 22 mineral springs with a total debit of 4000 l\min. and a temperature of 37-52 C. The mineral water is light, clear, colourless, flavourless 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 radio radioactive gas. The radioactive emanation is 10-165 Em, pH - 7,6 - 9,02 and over 20 microelements. Acid content - 200 - 270 mg\l. The Augusta hotel is the only hotel with a full medical program in Bulgaria.
# Climate: The climate is moderate continental with mild and warm winter. The average annual snowcover is 12 days. Spring comes early, summer is temperately hot with an average month temperature of 22 C. Autumn is warm and longlasting. Cloud coverage is low. The average annual humidity is moderate (70 %). Foggy weather is an exeption. The wettest months are June and November.
The maximum air humidity is 65-70 %.
Sunny days - 280 per year.
The town is ecologically clear. There are no industrial plants or factories in the region. It is rich in parks and green areas.

Velingrad is the most beautiful and most famous among the Bulgarian Balneological resorts. It lies at the western end of Chepino Valley, one of the most attractive part of the Rhodopean Mountains in Southern Bulgaria. There are 70 sources of mineral water with curative and preventive properties.
The mineral waters (from springs and wells) vary considerably in temperature, mineralization, radon, silicic acid and fluorine content, and are suitable for treatment of a wide range of diseases. 9000 litres of water per minute spring from the five thermal and mineral deposits in Ladjene, Kamenitza, Chepino, Rakitovo and Kostadinovo. Velingrad is situated at 750-850 m above sea level. Summer is warm, winter is mild. The average annual temperature is 10C; and the average July temperature is 19C. The annual duration of sunshine is about 2,000 hours. The relative air humidity ranges from 65 to 75 per cent.Surrounded by age-old pine tree woods, the town favors abundant sunshine. This exclusively rare and valuable combination has a beneficial influence on the process of ionization (negative ions are prevailing) and are of definite therapeutic importance.
In the resort successfully are treated pulmonary cases: pulmonary emphysema, chronic bronchitis, post bronchial pneumonia, etc. The treatment of non-specific diseases of the respiratory tract is particularly successful. Considerable experience has been accumulated in the efficient treatment of diseases of the locomotive system, nervous diseases and gynecological disorders.
Together with the numerous mineral waters Velingrad takes pride in another natural phenomenon as well - the Kleptuza. This is the biggest Karst spring in Bulgaria with debit of 1200 litres of ice-cold water per second.