Plitvice Lakes National Park - Croatia

Plitvice Lakes National Park  is the oldest national park in Southeast Europe and the largest national park in Croatia.

The protected area extends over 296.85 square kilometres (73,350 acres). About 90% of this area are part of Lika-Senj County, while the remaining 10% are part of Karlovac County.

In 1979, Plitvice Lakes National Park was added to the UNESCO World Heritage register among the first natural sites worldwide. Each year, more than 1,200,000 visitors are recorded. Entrance is subject to variable charges, up to 110 kuna or around $18USD per adult in peak season.

The national park is world famous for its lakes arranged in cascades. Currently, 16 lakes can be seen from the surface.These lakes are a result of the confluence of several small rivers and subterranean karst rivers. The lakes are all interconnected and follow the water flow. They are separated by natural dams of travertine, which is deposited by the action of moss, algae, and bacteria. The particularly sensitive travertine barriers are the result of an interplay between water, air and plants. The encrusted plants and bacteria accumulate on top of each other, forming travertine barriers which grow.