Schlettau Castle dates probably from the 13th century. In the 14th century the castle was extended to a Gothic-style castle palace by the Schönburg-Crimmitschau family.
From 1413 to 1536 Schlettau belonged to the Cistercians. After the secularization in 1536 it became the property of the Saxon Electors, who used it as a hunting lodge. The still existing stuctures consist of a Renaissance section (about 1620) and two Baroque wings (early 18th century). Today it is restored and hosts a 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.