Once two-part Langendorf Castle was built in the 12th and 13th centuries as main and fore-castle surrounded by a moat. The round corner-tower of the late-gothic manor house dates back to the 15th century, as does the oldest part of the manor house. The more recent part of the manor house includes the chapel bay window and the courtrooms. The fore-castle with three wings was renovated in the 16th century, of which only the west wing has been preserved until today.
Today Langendorf castle is one of the best preserved and maintained moated castles in the Rhineland. Regular concerts are held there, entitled 'Concert in the Outbuilding' for up-and-coming young artists.
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.