There are 10 localities in Croatia that are part of UNESCO List of World Heritage sites. Plitvice Lakes is Croatia's best known national park and the only Croatian natural jewel that is on the UNESCO List of World Heritage sites. The main attractions of this park, unique in the world, are the 16 small lakes joined by waterfalls created by the sedimentation of travertine, a special type of limestone. This national park encompasses the source of the river Korana, located in the area surrounded by dense forests of beech, fir and spruce. There are also several caves in the park, as well as springs and flowering meadows. The brown bear stands out as one of many protected animal species. The popularity of this park is also boosted by the special means of transport used to ferry visitors around: the panoramic electric trains and the noiseless electro-powered boats.
It is impossible to say whether the park is more beautiful in the spring, when the flowers in its meadows are in full bloom and when the trees have turned green again, or when the riot of autumn colours is reflected in the waters of the lakes, or indeed during the winter calm, when ice petrifies the waterfalls and when the surrounding trees are heavily laden with snow. By a network of paths, visitors can get around and access the numerous waterfalls and the rocky lake shores easily.