Plitvička jezera are the oldest, most famous and considered to be the most beautiful national park. It is included in the UNESCO’s World Heritage List. It is comprises of 16 cascading lakes connected by waterfalls. Plitvice Lakes will charm you with an interesting community of beech and fir forests in the jungle stage, 50 species of orchids, 321 species of butterflies and many other plant and animal communities. There are possibilities of hiking, riding in electric boat and train, photographing, bike riding, rowing and skiing in winter times.