Istanbul is world’s 5th most popular tourist travel destination. Its biggest attraction is the historic center, partially listed as an UNESCO World Heritage Site.
A geographic and metaphoric melding of East and West, Istanbul is the world’s only city covering two continents. The Bosporus runs through the center; Europe lies to the west, Asia to the east.
Istanbul is increasingly popular as a port of embarkation (or disembarkation) for a range of itineraries, from the Black Sea and Eastern Mediterranean Greek Isles trips to the migration, twice a year, of ships between Europe and Asia. You can find as many as six ships a day docking there.