Holsterburg was built by brothers Hermann and Bernhard Berkule before 1191. It was destroyed in local war in 1294. After its destruction, the Holsterburg was covered with a mound of earth, probably also for symbolic reasons, to erase the Berkule family and their ancestral seat from the memory of posterity. Under the hill, the complex has been preserved as it was in 1294.
The hill was excavated in 2010-2017 and castle ruins were cleaned.
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.