Office buildings and residential apartments are being built on the site. The authorities are trying to develop the park into a self-contained suburb over the next two decades. It currently home to around 8,500 workers from over 100 companies, including Samsung and Commonwealth Bank.

By contrast, the Olympic complex in Athens looks derelict and unused, a long way from International Olympic Committee President Jacques Rogge's prediction in 2004.

Jacques Rogge, IOC President, said, "It's going to leave a great legacy to Greece and to Athens for generations to come."

Nearly five years after the Athens Games, some venues have been transformed into malls or ministry buildings; others sit abandoned with locks on their gates. For a country heavily dependent on tourism, Greece has done little to use its Olympic legacy to lure visitors. As some critics say, a huge opportunity has been lost for the birthplace of the modern Olympic Games.