Hardtburg Castle, situated 245 metres above sea-level in the Hardtwald forest, is a very unusual castle, compared with other castles and farms. It was founded in the 11th century, which makes it one of the oldest local buildings. The two-part castle is surrounded on all sides by a moat and is situated at some distance from the nearest town. At the centre of the main castle is a hill excavated from the side of the valley, on which a square stone tower has always stood.
Today it retains the character of a medieval moated castle, as it has not been altered since its completion in the 14th century. Originally it belonged to the Earl of Are-Hochstaden; after his decease his last descendant, Earl Konrad von Hochstaden, Archbishop of Cologne, inherited the estate. Since the 17th it has progressively fallen into disrepair, due to lack of maintenance. Towards the end of the 18th century ownership was transferred to the Finance Ministry of France; around 1815 the State of Prussia established a forestry office here.
Today it belongs to the State of North Rhine/Westphalia and serves as the residence of the Hardtwald Forester.
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.