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. It was around this time that the smaller of the theaters was converted to an odeon, and the Hellenistic theater became Greco-Roman. Containing one of only two examples of a circular orchestra, the other is at Epidauros. The Romans constructed a proskenion that covered part of the orchestra with a hyposkenion below it.
Another notable feature is the Charonian stairway. Actually more like a tunnel, the stairway lead underground from the backstage to the orchestra pit and is presumed to be used to 'sudden appear' among the actors in play. Other reports suggest these tunnels were too short and narrow to operate effectively for actors, especially actors in costume.
References:The Château du Lude is one of the many great châteaux of the Loire Valley in France. Le Lude is the most northerly château of the Loire Valley and one of the last important historic castles in France, still inhabited by the same family for the last 260 years. The château is testimony to four centuries of French architecture, as a stronghold transformed into an elegant house during the Renaissance and the 18th century. The monument is located in the valley of Le Loir. Its gardens have evolved throughout the centuries.