The Ancient theatre is situated in the natural saddle between two of the Three Hills. It is divided into two parts with 14 rows each divided with a horizontal lane. The theatre could accommodate up to 7,000 people. The three-story scene is on the southern part and is decorated with friezes, cornices, and statues. The theatre was studied, conserved, and restored between 1968 and 1984. Many events are still held on the scene including the Opera Festival Opera Open, the Rock Festival Sounds of the Ages, and the International Folklore festival. The Roman Odeon was restored in 2004. It was built in the 2nd–5th centuries and is the second (and smaller) antique theatre of Philipopolis with 350 seats. It was initially built as a bulevterion, an edifice of the city council, and was later reconstructed as a theatre.