Many attractions are situated inside the Fortress, such as the Antiquity Street near the Lapidarium, the remains of the Roman Thermae, and the Hammam – a stunning Turkish bath that is the oldest construction from the period of the Ottoman rule.

The Skull Tower, monument made of mud and human bones, still reminds of the uprising against the Ottoman Empire and the heroism of the great Serbian commander.

Kalča is one the favorite heroes of Niš – he welcomes and farewells the visitors of the former Turkish handicraft Bazar, today a street filled with cafes and restaurants.