Pirot Fortress Kale (Momčilov grad)
The symbol of Pirot and one of Serbia's ten finest fortresses. This medieval citadel in the city centre — also called Kale, Pirot Fortress, or Momčilov grad — comprises Upper, Middle, and Lower towns with a donjon tower, ramparts, and gates. Built under Prince Lazar (1371–1389) on a site inhabited for millennia. Despot Stefan Lazarević extended the Middle town; the Lower town was added in Ottoman times (18th–19th c.). Restored and open to visitors; admission is free, with the Museum of Ponisavlje archaeological display nearby.
Source: Wikimedia Commons

