Istanbul - crossroads of Europe and Asia
Just the number of names this fabulous city has been called over the centuries gives a sense of the variety it has to offer. Byzantium (when it was under Greek control) Constantinople (Roman Empire) and finally Istanbul (Ottoman). There have been other titles, by the way, but these are the ones that have stuck in the public imagination.
Having been the capital of several empires and spanning two continents (Europe and Asia) means one thing - an incredible historical and cultural patrimony that makes it one of the world's great cities, let alone one of the most beautiful and exciting.