The most famous place in Greece is Acropolis (Ακρόπολις). We have started our study of this place from viewing Odeon of Herodes Atticus (Ωδείο Ηρώδου του Αττικού). This is the ancient stone theater built in 161 AD by the Athenian magnate in memory of his wife. The theater was used mainly for music concerts.
This place seems to be used in our times as we saw many modern devices used in modern concert shows.