Petrovaradin Fortress is a trademark of Novi Sad , otherwise called the Gibraltar of the dunavu
Petrovaradin Fortress is a trademark of Novi Sad , otherwise called the Gibraltar of the dunavu.To the second largest fortress in Europe , and had a great importance throughout history , especially during the Ottoman invasion of the country, near the fortress have led many celebrities Battle between Ottoman Empire and the Austro - Hungarian Empire , where the Serbian border guards played a significant role. Today, the fort occur many cultural events, most notably the Exit music festival .