Druskininkai

According to some sources the site of present-day Druskininkai was inhabited by local Yotvingian tribes in the early Middle Ages. In the 13th century the area was conquered by the Lithuanians. A small castle was built in the area as a part of the defence system against the Teutonic Order. In 1308 the castle was conquered by the Teutonic Knights and destroyed, causing a depopulation of the area.
The first written mention of Druskininkai dates back to 1636. The name of the town suggests that the local population collected the precious mineral. In the late 18th century it was believed that minerals found in the waters of Druskininkai area produced health benefits and their usage in the medical treatment of asthma and other ailments began. In the early 19th century Ignacy Fonberger, a professor at the University of Vilnius, analyzed the chemical composition of Druskininkai's waters and showed that they contain large amounts of Calcium, Sodium, Potassium, Iodine, Bromine, Iron and Magnesium. He also promoted the town as a holiday resort for the population of Vilnius.