The Burg Liebau is the ruin of a spur castle on a flat rock spur on the right flank of the Elster. The castle was first mentioned in a document in 1327. In the 14th century exchanged Plauen Vogt Heinrich the Elder including the castle with the Wettiners and 1441 the castle was owned by the Dölau, of which the castle from 1500 to 1550 graduated like in Renaissance style was rebuilt.
In 1640 the castle was sacked by Swedish mercenaries and the stair tower was set on fire. The castle remained with its last owner Gottlob Christian von Doelau on Ruppertsgruen and his wife Sophia Christina geb. von der Planitz owned it until 1725, was then owned by Johanna Charlotte von Beust until 1742 and then fell into disrepair.
From 1995 to 1997 security work took place in cooperation with the State Office for Archeology and is now a ground monument .
The castle complex on an approximately triangular plateau measuring 50 by 30 meters probably consisted of a defensive and residential tower , the gate tower and a surrounding wall with battlements , further protected by two section trenches that were approx. 5 meters wide and 2 meters deep. The actual castle ruin has the dimensions of 20 to 25 meters. To the east, the complex was protected by a partially natural 20 to 25 meters wide and 5 to 6 meters deep neck ditch with a drawbridge.
References: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.