Petrovaradin Fortress – Novi Sad, Serbia
Petrovaradin Fortress, nicknamed "Gibraltar on/of the Danube" 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
St. Nicholas Fortress – Sibenik, Croatia
St. Nicholas Fortress (Croatian: Tvrđava Sv. Nikole) is a fortress located in the town of Šibenik, one of the oldest native Croatian towns on the eastern shores of the Adriatic, in central Dalmatia, Croatia. St. Nicholas Fortress was built on the