Stara Zagora (Bulgarian: Стара Загора, .mw-parser-output .IPA-label-small{font-size:85%}.mw-parser-output .references .IPA-label-small,.mw-parser-output .infobox .IPA-label-small,.mw-parser-output .navbox .IPA-label-small{font-size:100%}pronounced [ˈstarɐ zɐˈɡɔrɐ]) is a city in Bulgaria, and the administrative capital of Stara Zagora Province. It is located in the Upper Thracian Plain, near the cities of Kazanlak, Plovdiv, and Sliven. Its population is 121,582 making it the sixth largest city of Bulgaria, just below Ruse and above Pleven. The city has had different names previously, including Beroe, Borui, Irenepolis, Eski Zagra, Augusta Traiana, etc. The earliest traces of civilisation date back to the 7th millennium BC. Some scholars believe that the ancient Thracian city of Beroe was located on the present site of Stara Zagora. In 1968, Neolithic dwellings from the mid-6th millennium BC were discovered in the town, which are the best preserved and richest collection in Europe of its kind and have been turned into a museum. A high density of Neolithic and Chalcolithic settlements has been identified by researchers and a ritual structure nearly 8,000 years old has also been discovered. The first copper factory in Europe and a large ore mining centre were discovered, both over 7,000 years old. The original settlement dates from the 5th-4th century B.C under the name Beroe or Beroia, founded by Philip II of Macedon. It was renamed to Ulpia Augusta Traiana during Roman rule and became the second most important city, after Philippopolis. During Marcus Aurelius' rule, many buildings have been built, art and music developed and there were statues and inscriptions of Orpheus.