With the close of the Summer Games Sunday comes the toughest contest of all: the one in which London vies to overcome the curse of the Games themselves. Some experts say that few, if any, Olympic host cities of recent memory reaped long-term economic rewards. Nowhere is that more evident than in Athens, where eight years after the estimated $15 billion Summer Games, abandoned venues and empty parking lots stretch across the city–hunkering monuments to the dark consequences of welcoming the world into your living room.