The Odeon of Herodes Atticus (or simply Herodium) is right beneath the Acropolis, at the foot of the sacred rock. The odeon was built in the 2nd century AD, with money given by the rich Athenian Herodes Atticus in memory of his beloved wife Rigillia.

Herodion was used mainly for music events, was roofed with wooden ceiling and could accommodate 5000 spectators. It had 32 rows of marble stands, and a semicircular orchestra with three-storey stage building.

Probably the Odeon only worked for about a century, for it was also destroyed during the raid of the Heruli (267 AD). The roof burned completely and with the passage of time, dirt filled the bleachers.

Herodion was not restored until 1953. Since 1957 it hosts great cultural events, where renown artists from all over the world take part, while it is also hosts a part of the famous Athens Festival.