Serbia. Province of Vojvodina. Novi Sad. View from the Petrovaradin Fortress on Novi Sad and the Danube river. A family with daughter visits the Fortress. A local artist has created a work of art, a wooden scuplture with the shape glasses and two painted eyes. Novi Sad is the second largest city of Serbia, the capital of the autonomous province of Vojvodina and the administrative center of the South Bačka District. It is on the banks of the Danube river. Petrovaradin Fortress is a fortress in the town of Petrovaradin, itself part of the City of Novi Sad, It is located on the right bank of the Danube river. The cornerstone of the present-day southern part of the fortress was laid on 18 October 1692 by Charles Eugène de Croÿ. Petrovaradin Fortress has many underground tunnels as well as 16 km of uncollapsed underground countermine system. 26.4.2017 © 2017 Didier Ruef