The Dymaean Wall (Teichos Dymaiōn) or Kalogria Castle is a prehistoric acropolis in western Achaea, Greece. The fortress stands in a strategic position on a rocky hilltop, north of the Prokopos lagoon, near the village of Araxos. It was built in the Mycenaean period, probably around 1300 BC, but human occupation of the site started already around 3500 BC. It was deserted in the 18th century AD. During World War II it was used by occupying Italian forces, who built a number of military installations on the site and damaged the prehistoric fortifications.
It was named the Dymaean Wall after the nearby ancient city of Dyme. During the war between the Achaean and the Aetolian Leagues (220–217 BC) it was seized by king Philip V of Macedon.
References:The ancient Argos Theater was built in 320 BC. and is located in Argos, Greece against Larissa Hill. Nearby from this site is Agora, Roman Odeon, and the Baths of Argos. The theater is one of the largest architectural developments in Greece and was renovated in ca 120 AD.
The Hellenistic theater at Argos is cut into the hillside of the Larisa, with 90 steps up a steep incline, forming a narrow rectilinear cavea. Among the largest theaters in Greece, it held about 20,000 spectators and is divided by two landings into three horizontal sections. Staircases further divide the cavea into four cunei, corresponding to the tribes of Argos A high wall was erected to prevent unauthorized access into the theatron and may have helped the acoustics, but it is said the sound quality is still very good today.
Around 120 CE, both theaters were renovated in the Roman style.