Senftenberg Castle was mentioned first time in 1197. In the 13th century it belonged to the Zebringer family and between the 14th and 15th centuries to the Wallseern family. The castle was destroyed during the rebellion in 1407-1409 and rebuilt later. It was a refuge place during the Siege of Vienna in the Ottoman Wars. The castle was finally destroyed by the Swedish troops in the Thirty Years' War in 1645. Today still impressive ruins with three gates and square keep exist.
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.