Constanta, the third largest city in Romania with its 350,000 inhabitants, was founded by the Greeks as a port on the Black Sea Coast for trading with inland people and called ''Tomis'' (VIth C. BC). The city was renamed later after Constantina, niece of Constantine the Great (274-337). It was still a flourishing port city in the Xth and XIth centuries trading with the Byzantine Empire and the city of Genoa. http://wikitravel.org/en/Constanta