Greinburg Castle was built between 1488 and 1495 by Heinrich and Siegmund Prüschenk with the imperial approval of Emperor Friedrich III. In 1533 Johann Leble (Löbl), acquired the castle. Under him the building received most of its present day form. In 1621 the castle was sold to the Earl Leonhard Helfrich of Meggau, who carried out basic changes. A three storeyed, columned arcade became the main feature for the appearance of the inner courtyard. Furthermore, under Meggau the Sala terrena (so-called stone theatre) was installed. In 1625 the “Rittersaal”, the Hall of Knights, and an adjoining chapel in the south west tower were redecorated.
The Dukes of Saxe-Coburg and Gotha have been owners of the Castle only since 1822. The building, which comprises four wings, houses the Coburg Rooms, which are the official rooms of the ducal family, as well as the Upper Austrian shipping museum.
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.