The ancient theatre of Megalopolis which, according to the 2nd century AD geographer Pausanias was the largest in its time, has reopened after a long period of excavation works on site. The theatre is located on the outskirts of Megalopolis, on the same site as ancient Megalopolis in SE Peloponnese, and forms part of the Archaeological Site of Megalis Poleos.

Apart from its size, estimated to have had a capacity of 20,000 people, the theatre is renowned for its exceptional acoustics. Constructed by the architect Polykleitos the Younger from Argos circa 370 BC, it forms part of a European restoration programme financed by UNESCO on account of its significance as an ancient monument.

The nearby archaeological site of Arcadic Orchomenos, a prehistoric settlement of Arcadia and one of the most ancient cities in the area, is also open to visitors. The Ancient Theatre on site is of the Early Hellenistic Period (4th -3rd BC); it is also one of the biggest theatres in antiquity, with a capacity of 4,000 people.

Placed at an altitude of 800m, the theatre offers spectacular views, while visitors can admire the marble thrones where the priests used to sit, as well as the altar bearing the inscription “Omonoia” which are kept in excellent condition.