Fortifications of Diyarbakır - Credit: Wikimedia Commons
The Fortifications of Diyarbakır are a set of fortifications enclosing the historical district of Sur in Diyarbakır, Turkey. They consist of an inner fortress, the citadel, and an outer ring of city walls."Diyarbakır Kalesi ve Surları (Diyarbakır)" . Read more on Wikipedia
Source: en.wikipedia.org