Maps of Constantinople
"Constantinople was founded c. 658 B. C. by a Greek colony from Megara; the site was then occupied by the Thracian village of Lygos. The chief of the Megarian expedition was Byzas, after whom the city was naturally called Byzantion (Lat. Byzantium). Despite its perfect situation, the colony did not prosper at first; it suffered much during the Medic wars, chiefly from the satraps of Darius and Xerxes"