Kale fortress is located within the city centre of Pirot.
“Water town”, a fortress surrounded by a river, which one could access using drawbridges.It was designed to defend the flat, swampy area that surrounds it.
The first typical military artillery fortification on the right bank of the Danube, in the territory of the municipality of Veliko Gradište.
Fetislam is made up of two fortifications, known as the Greater and the Lesser Fort, built separately in different epochs.
The Petrovaradin Fortress, the second largest in Europe, is situated in the city of Novi Sad, on the banks of the Danube.
Near the city of Kraljevo, on a narrow plateau on top of a rocky ridge by the river Ibar, stand the remains of the medieval city of Maglič.
On the rocky, cone-shaped hill overlooking Kosovska Mitrovica stand the remains of the fortified city of Zvečan. It is unknown who built this fortification or indeed when it was built. The first mention of it is found in the 11th century, when it was ruled by Serbian grand princes.
On Gradina hill near the city of Novi Pazar stands Stari Ras, a 12th century fortress.
Emperor Trajan is known for his lasting and praiseworthy building feats.