Istanbul Turkish: İstanbul is Turkey's most populous city, and its cultural and financial center. Located on both sides of the Bosphorus, the narrow strait between the Black Sea and the Marmara Sea, Istanbul bridges Asia and Europe both physically and culturally. Istanbul's population is estimated to be between 12 and 19 million people, making it also one of the largest in Europe and the world.
Istanbul was one of three European Capitals of Culture in 2010 (http://istanbul2010.org/).
