See all Attractions in Nis Nis for: Adventure, Food And Dining, Art And Culture, Nightlife, Spa, History, First Timers, Family, Romance, Shopping Nis Fortress About Niš Fortress (Serbian: Нишка тврђава / Niška tvrđava) is a fortress in the city of Niš, Serbia. It is a complex and important cultural and historical monument. It rises on the right bank of the Nišava River, and is over two millennia old.[1] Add to Wish List
