There are music venues and then there’s the Odeon of Herod Atticus (or rather, the Herodion, as every Athenian calls it). Some pretty stellar names have played at this epic 2,000-year-old arena on the southern slopes of the Acropolis. Frank Sinatra, Elton John, Andrea Bocelli, Liza Minnelli, and, of course, Maria Callas. Put them all together and they still can’t outshine the star quality of the Herodion. From May to October, it’s the main open-air venue for the Athens Festival, an international bonanza of arts and culture. On stage, global icons like Sting gaze up at the moon rising over the glowing Parthenon, as if to say: “Holy cow”. And so will you.