JarreUK wrote: In the Autumn of 2000, UNESCO Ambassador, President of ELPIDA (Association of Friends of Children with Cancer), and personal friend of Jean Michel's, Marianna Vardinoyannis, invited Jean Michel to perform in Athens, with the Odeion of Herodus Atticus Amphitheater (which is situated beneath the world-famous Acropolis) being chosen as the location for the concerts. The concerts were to be held in aid of the ELPIDA Charity, with the proceeds from the ticket sales going to the construction of a new Hospital specially for children with Cancer.
Anyway, GJ's explanation sounds pretty reasonable.