Some months ago i went to this beautiful place in Croatia: the Plitvice Lakes. In this picture i took a little spot on the routes of intricate paths.
This National Park is located halfway between Zagreb, the capital of Croatia and Zadar in Dalmatia and consists of 16 lakes fed by the rivers Bijela Rijeka and Crna Rijeka (White River and Black River) and underground springs, connected between them from a series of waterfalls, which flow into the Korana river.
In 1979 they were proclaimed World Heritage by UNESCO and can be visited thanks to a well-marked network of paths and 18 km of wooden walkways.
I recommand it!