Situated at an altitude of 224 m in the valley of the Sandanska Bistritsa River, at the foot of the magnificent south-western slopes of the Pirin Mountain, the town of Sandanski is famous for the beauty of its scenery and a wealth of resources for spa and climatic treatment. This is the warmest and sunniest town in Bulgaria with the least temperature variations throughout the year.The climate of Sandanski can be described as unique. Throughout the year air temperature is 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.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.The resort is specialized in the treathment of upper respiratory tract and lung deseases of non-tubercolosis type and of inflammation degenerative diseases of the joints.