Diocletianopolis (Thrace)
Diocletianopolis (, , "Town of Diocletian") was a magnificent ancient Roman town in the region of Thrace, nowadays the town of Hisarya in Bulgaria. Its impressive remains include the enormous defensive walls which still stand close to their original height for the majority of their circuit. There is an on-site museum for the many objects discovered. The site The Roman city was situated on a terrace with valleys on three sides and centred on hot mineral springs. Today the city's interior lies mostly buried under a green park. Excavations are still uncovering more unknown and impressive parts of the city. History Archaeological discoveries show that the site was inhabited from 6,000 years BC probably due to the many hot mineral springs nearby. Later, a Thracian settlement developed there and in the 5th and 4th centuries BC it became a major market town trading with Greek cities on the northern Aegean as evidenced by the range of imported coins and pottery found. In the 1st century AD Thrace was conquered by the Romans and the settlement eventually became a Roman city and one of the three most important towns in the province. It was first called Augusta. The region centred on