Burg Pyrmont was built in the late 12th century by Kuno von Schönburg. It was first time mentioned in document dating from 1225. Waldbott Bassenheim family restored the castle in 1712, but it was partially demolished during the French occupation in the tide of 18th and 19th centuries. The last restoration was made in 1912. Today Pyrmont castle is open to the public.
References:The Odeon of Herodes Atticus is a stone theatre structure located on the southwest slope of the Acropolis of Athens. It was built in 161 AD by the Athenian magnate Herodes Atticus in memory of his wife, Aspasia Annia Regilla. It was originally a steep-sloped theater with a three-story stone front wall and a wooden roof made of expensive cedar of Lebanon timber. It was used as a venue for music concerts with a capacity of 5,000. It lasted intact until it was destroyed and left in ruins by the Heruli in 267 AD.
The audience stands and the orchestra (stage) were restored using Pentelic marble in the 1950s. Since then it has been the main venue of the Athens Festival, which runs from May through October each year, featuring a variety of acclaimed Greek as well as International performances.