Alexander the Great conquered much of the known world from Egypt to parts of India between 336-323 BCE. By the time he was 33, he had created one of the largest empires of the ancient world and founded over 70 cities across three continents. Some of the greatest wonders of the ancient world included the Pyramids of Giza in Egypt, the Hanging Gardens of Babylon in Iraq, the Temple of Artemis in Turkey, and the Lighthouse of Alexandria in Egypt.