Belgrade is a jungle in every sense of the word, and the best place to have fun is among the fallen trees. Located about 15 kilometers outside the city, you'll be glad to know that there are buses running there from time to time during the day. This forest is named after the thousands of Serbs who were deported from Belgrade in 1521 AD when it fell to the Ottomans. When you visit this forest, you will find under construction trails, picnic areas, an arboretum open to all, and the giant park contains more than 2,000 species of exotic and local plants.