The ancient theatre of Lindos lies at the foot of the west slope of the rock of the Lindos acropolis. It had 19 rows of seats, most of them carved into the rock although somewere built, as were the endmost cunei and the side retaining walls, which do not survive. Today only the rock-carved sections are preserved: the circular orchestra, the three central cunei of the lower cavea and parts of the two neighbouring ones, and the central section of the upper cavea. The orchestra of the theatre is circular, also carved into the rock.
The theatre is dated to the 4th century BCE and had a capacity of 1,800-2,000 spectators. It is connected to the great city festivals in honour of Dionysos, the Sminthia, which included theatrical, musical and athletic competitions, processions and sacrifices. In the 3rd century BCE, directly adjacent to the theatre was built the Tetrastoon, a rectangular building with an internal colonnade, perhaps a sanctuary of Dionysos Smintheus.
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.