Istanbul is the only city in the world that occupies two continents. The Bosphorus Strait — 30 kilometers long, less than a kilometer wide at its narrowest — divides the city between Europe and Asia, and the ferry crossing between Eminönü on the European side and Kadıköy on the Asian side takes about twenty-five minutes. In that time, you watch tankers the size of apartment … [Read more...] about Istanbul at the Threshold: A City That Has Always Been Two Things at Once