438 BC. The Parthenon is complete. This masterpiece is the crowning achievement for the Greek people. Without Alexander the Great, it is possible Greece's Golden Era would have been just a footnote in history. Tens of thousands would die during Alexander's relentless attacks on Persia and Egypt, yet, his armies carried Greek life, culture and values far abroad and this empire became known as the "Hellenistic" world. Greece's amazing engineering achievements and ideas are still with us today. watch