Marianske Lazne (Marienbad) boasts the largest number of healing springs in the region - altogether forty originate here. Located in a valley surrounded by forest, Marianske Lazne is often called "a town in a sea of green". Systemic treatment in the local springs began approximately 200 years ago, and the first institute for spa treatment was founded here as late as 1903. The spa flourished in the early part of the 20th Century, as proven by the beautiful Art Nouveau architecture that provides Marianske Lazne with a romantic milieu.