360° panorama by Zoran Strajin. Click the image to open the interactive version.
Petrovaradin Fortress is a fortress in the town of Petrovaradin, itself part of the City of Novi Sad, Serbia. 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 Eug`ene de Cro"y. Petrovaradin Fortress has many underground tunnels as well as 16 km of uncollapsed underground countermine system.