Czech Spas of Karlovy Vary and Marianske Lazne from Prague. This full day guided coach tour from Prague combines a visit to the world-renowned Czech spas, Karlovy Vary and Marianske Lazne. Discover the rich history of Karlovy Vary and its twelve springs before stopping for lunch. In the afternoon discover Marianske Lazne, which was developed at the beginning of the 19th century in a valley where many mineral-rich healing streams spring from the ground. Book Now and Save 15%: Czech Spas of Karlovy Vary and Marianske Lazne from Prague.