Istanbul is Turkey's political, economic, cultural, financial, news, trade and transportation center, which is one of the world's famous tourist attractions and prosperous international metropolis.
It spans two continents, Asia and Europe. The Bosporus Strait separates Turkey's Asian part from its European part.

It is often joked that Istanbuls are the only people in the world who work in Asia during the day and go home at night to live in Europe. Istanbul was the capital of Byzantium, Osman and the three Roman empires.

St. Sophia Cathedral, Groundwater Palace both are so amazing.