Deep in the heart of Plovdiv city center lies the antique roman theatre. The theatre stands between the south-western slope of the Dzhambaz Tepe and the Taxim tepe hill within the old town, and is a major tourist attraction for travelers coming to the area.
The theatre was built in the 2nd century AD under the orders of Trajan the Roman Emperor at this time, and is the largest surviving Roman construction in Bulgaria today.
Built with around 7,000 seats, each section of seating had the names of the city quarters engraved on the benches so the citizens at the time knew where they were to sit.
The theatre was damaged in the 5th century AD by Atilla the Hun.
(the text was copied from: http://en.wikipedia.org/wiki/Plovdiv_Roman_amphitheatre )