The Plitvice Lakes National Park, Croatia's most popular tourist attraction, was granted UNESCO World Heritage status in 1979. The beauty of the National Park lies in its sixteen lakes, inter-connected by a series of waterfalls, and set in deep woodland populated by deer, bears, wolves, boars and rare bird species.The National Park covers a total area of 300 square kilometres, whilst the lakes join together over a distance of eight kilometres.There is also an electric boat that takes you from one side of the largest lake to the other. This boat runs all year round, more frequently during summer. A "panoramic train" (i.e. a shuttle bus) also runs within a particular route in the park