Istanbul is the largest city in Turkey, covering an area of 5342 square kilometers (2062 sq miles).
It is standing upon 2 continents, Asia and Europe, divided by Bosphorus Strait (32 km long).
The city has shores on both Black Sea in the north and Marmara Sea in the south.
There are nearly 14 million people living in Istanbul, and 2/3 of population lives on the European side.
Istanbul has 40 district municipalities. 25 of them are on Europe and 15 of them are on Asia.
Asian side has phone area code 216 and European side has phone area code 212.