Caroville, a city in the west of Czech Republic. Formerly known as "Carlsbad". On the Oherje River. Founded in 1349. Famous mineral spring sanatorium. The temperature of mineral water is 41.2-72.2 C. It contains many chemical elements for drinking, bathing and treating diseases. The famous casba salt (laxative) can be extracted from mineral springs. There are ceramics, refined glass, brick and other industries in the suburbs. International film festivals have been held here every two years since 1950.