In this episode we will talk about "The birth of Athens", the clash between the Persian Empire and Greece which took place 2500 years ago, a very distant clash which constituted a fundamental moment in the history of the West. Facing each other in this battle were on one side the empire that extended from Egypt to India and on the other the small city-states of Greece perpetually in conflict with each other. A clash in which two opposing visions of the State, two civilizations, two completely different lifestyles faced each other. And how this war ended is at the basis of how we have become, of our political and cultural ideas and of how to live together. Compelling historical events told by Alberto Angela like pages of a novel, with an original and spectacular solution through sophisticated computer reconstructions.