| Atanas Fortress | |
|---|---|
| General information | |
| Architectural style | Fortification, mixed |
| Town or city | Krupac, Pirot |
| Country | Serbia |
Atanas (Serbian: Атанас) is a fortress in Serbia. It is located 8 km southeast from Pirot, near the village Krupac. Today remains of the keep can be seen.[1]