The Plitvice Lakes area, declared a national park, is one of the most beautiful natural sights in Europe. It is a wooded mountain region through which, one below the other, sixteen beautiful lakes and ponds of crystal blue-green color. Many rivers and streams fill them with water, they are connected to each other by sparkling cascades and forest waterfalls. Over the millennia, the water of these lakes breached, eroded and dissolved the rocks and beds through which it flowed. Due to the constant deposition of this material, partitions with waterfalls, curtains, channels and cascades grow. With a whitish layer, this sediment covers and petrifies the coast, fallen trees and stones at the bottom of the lake, and gives the water a special sparkling beauty. With its mechanical power, the water simultaneously destroys individual travertine barriers, therefore the entire process of travertine formation and lake formation is very dynamic. In essence, this is a biodynamic process that is both a first-class attraction and an extremely interesting scientific phenomenon. The process of natural construction continues even today in conditions of undisturbed ecological relations.