Gamzigrad - Credit: Wikimedia Commons
Gamzigrad (, ) is an archaeological site, spa resort and UNESCO World Heritage Site of Serbia, located south of the Danube river, in the city of Zaječar. It is the location of the ancient Roman complex of palaces and temples Felix Romuliana (), built by Emperor Galerius in Dacia Ripensis. The main area covers .http://www.isprs.org/congresses/beijing2008/proceedings/5_pdf/70.pdf Read more on Wikipedia
Source: en.wikipedia.org