Illingen Castle was documented first time in 1359 when it was owned by Dietrich V. von Kerpen (this is why castle is also called Kerpen Castle). In the16th century it was moved to the hands of Nassau-Saarbrücken counts, who owned Illigen until French Revolution. Illingen castle was badly damaged in the Thirty Years' War and rebuilt later.
The castle started to decay after 1825 and was used as a quarry. The tower was restored in 1951 and today there is a restaurant.
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.