The list includes remains (ruins) of military constructions; fortresses (tvrđave), castles (zamci), towers (kule), etc.
Forts in Serbia are preserved from the Roman, Byzantine, medieval Serbian and post-Ottoman eras.
The majority of forts have been renovated throughout history with changing rule and adaptations to war technology development.
Later, Western, Habsburg and Austro-Hungarian architecture exists in Vojvodina; Bač castle, Vršac.
The fortified monasteries of Mileševa, Manasija and Ravanica served as protection to locals during harsh times.