The history of Rajecké Teplice dates to 1376. The first reliable evidence on the existence of Rajecké Teplice - the Deed of Luis the Great, Hungarian King - originated that year. The local alcaline thermal springs were known as early as that year and the Thurza’s family arranged built the first spa buildings in the 17th century. The development of the Spa continued also in the 18th century, when the spa building was built, and some physicians came and started publishing first scripts regarding the curative effects of thermal springs. The first analysis of Rajec mineral water was done in 1793.


The complex development of the health resort started in the 19th century, when the Spa became a popular summer resort of nobility, high aristocracy and wealthy middle class. In recent times the largest development of the Spa started after World War II. In 1959 Rajecké Teplice was granted the Spa Town status, which also specified the area of the Spa and provided a protection of curative mineral springs.