The history of Cornatel castle dates back to the 9th century, although it was built on the site of ancient Roman remains. In 1211 Alfonso IX of León donated to the area to Knight Templars who rebuilt the castle. Subsequently it was owned by the Duke of Lemos. The castle is accessed by bordering the western section between the walls and the impressive cliff at the foot of the castle. Inside, exhibitions are held periodically.
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.