The Romans overthrew the Thracians and Hisarya became a Roman town.
The southern gate of Hisaryas Roman walls.
Entrance to the city was guarded by four impressive gates.
There are Roman ruins everywhere.
By the 5th century, it was the third largest city in the province after Plovdiv and Stara Zagora.
Today, it is one of best known spa town in Bulgaria.
The southern gate before repairs.
