<human>:  Were Greeks essential to crafting Egyptian Lighthouse of Alexandria?
<bot>: Yes, Greeks were essential to crafting Egyptian Lighthouse of Alexandria. The Lighthouse of Alexandria was an impressive monument in Egypt, but the Lighthouse of Alexandria was built by pharaoh Ptolemy II. Ptolemy II was the son of Ptolemy I Soter, who was a Greek bodyguard of Alexander the Great and became pharaoh of Egypt, not Ptolemy II.