Istanbul's Metropolitan Municipalities. Istanbul Maps. Istanbul Sights. Istanbul Transportation. Istanbul Travel Guides. Istanbul. Istanbul (Turkish: İstanbul) is the largest city in Turkey, constituting the country's economic, cultural, and historical heart.
With a population of 14.1 million, the city forms one of the largest urban agglomerations in Europe[d], second largest in the Middle East and the third-largest city in the world by population within city limits.[2][3] Istanbul's vast area of 5,343 square kilometers (2,063 sq mi) is coterminous with Istanbul Province, of which the city is the administrative capital. [c] Istanbul is a transcontinental city, straddling the Bosphorus—one of the world's busiest waterways—in northwestern Turkey, between the Sea of Marmara and the Black Sea. İstanbul Büyükşehir Belediyesi.