Stobi, N. Macedonia

Stobi is an archeological site in the centre of the Macedonia region, known originally as the ancient town Paeonia and later becoming the Roman province of Macedonia Salutaris.
Established somewhere in the Archaic period, it became annexed around 200 BC  by Philip V of Macedon. Covering an area of around 25,000 square meters, the town was a significant economic trading centre.  This was due to its strategic geographical position resting at the junction of two rivers and close to the main road connecting the Danube region and the Aegean Sea, 
The first historic record was in 197 BC, by the historian Livy, narrating the victory of Philip V of Macedon over the Dardani. Perseus, the last of the Antigonid dynasty kings, was defeated in 168 BC by a Roman invasion. The region was divided into four independent republics, and after 20 years was united as the  territory of Macedonia became a Roman province. 
The amphitheatre, in its prime, was large enough to seat 7638 people.  Much of the original seating has been ripped out, as other building projects required marble to be redistributed to more important buildings around the area.