Marmiroi church is mentioned in historical records for the first time in 1307. Since it has no narthex, and because of other similarities to other similar churches in Bulgaria and former Yugoslavia, it is thought to have been built in the 12th or 13th century AD, although some researchers have put its construction period in the 10th century. The most accredited hypothesis is that it was dedicated to Saint Mary.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.