Felix Romuliana

Gamzigrad is an archeological site near Zajecar in eastern Serbia of the ancient Roman imperial palace of Felix Romuliana, which has been on the UNESCO World Heritage List since June 29, 2007. Gamzigrad is the residence of the Roman emperor Gaius Valerius Maximianus Galerius (293–311), son-in-law of Diocletian. He named him Romuliana after his mother Romuli. The palace never seems to have been completed, and the emperors of the 4th century left the magnificent estate to the Christian church. During the 5th century, the palace was destroyed by barbarians, and in the 6th century, Romulian was rebuilt by Justinian I in the form of a border fortress. After the invasion of the Slavs at the end of the 6th century, the former imperial residence was abandoned. A mighty city, on 6.5 ha, with about 20 fortified towers. Inside was a lavish palace, two pagan temples, three Christian churches and other buildings; floor mosaics are considered to be equal to the best achievements of the late antiquity in Europe