Plovdiv is one of the few modern cities with a well preserved Roman Forum. Few towns had libraries during the Antiquity period and ancient Plovdiv was one of them. The forum was a commercial, administrative and religious centre of the ancient city. There were meetings being held there, debates, festivals, government affairs.
The forum covers an area of 20 ha (11 ha revealed) which makes it the largest of its kind in Bulgaria. The ancient city centre was built in the 1st century AD during the reign of Emperor Vespasian when ancient Philippopolis obtained a new city planning scheme and a centre (forum) according to a Roman model.
You can find the ruins of the Ancient Forum located behind the post office on General Gurko Street in the centre.