A man fishes on the banks of the Danube river in Zemun near Belgrade on July 26, 2013. Along its 588 km course through Serbia it passes through the picturesque Vojvodina flatlands and the national parks of the Fruska Gora??and Djerdap. Besides its natural wealth, there are many sites of cultural and historical value spread out along its banks. AFP PHOTO / ANDREJ ISAKOVIC