Bosphurus 

Istanbul is the only city in the world that is established on two continents. It is situated between the 48. north latitude and 28. east longitude.

The city consists of three parts in general; On the European side, the Historic Peninsula to the south of the Golden Horn and the Galata District to the north, and the New City on the Asian side. The European side of the city is a trade and business center, whereas the Asian side is more of a residential area.

Istanbul is established on the both sides of the Bosphorus which connects the Black Sea and the Sea of Marmara and separates
Asia and Europe. The 7 km. long narrow inlet, named Golden Horn, divides the European side of the city into two sections.
Because of its location between Asia and Europe,
Istanbul has always had a great geopolitical importance.