Psy posted an image of the Giza plateau,
3100 BC - 30 BC: Ancient Egypt
1600 BC - 1100 BC: Mycenean
1100 BC - 50 BC: Ancient Greece
753 BC - 509 BC: Ancient Rome
31 BC - 312 AD: Roman Empire
Although this is misleading, Psy am not implying the builders of these pyramids were Egyptian. But Egypt was built before Greece.