If you stand on a bridge over the Bosphorus, one foot can be in Europe and the other in Asia. There are three giant bridges across the strait, plus a railway and a road that go underneath through tunnels under the seabed. People cross between continents on their way to work.
The Bosphorus is only about 700 metres wide at its narrowest - thinner than most lakes. But ships from all over the world have to pass through it to get from the Black Sea to the Mediterranean Sea. Around 40,000 big ships sail through every year, between the apartment blocks of Istanbul.
Istanbul is the only city in the world that sits on two continents. It used to have an even older name: Constantinople. People have lived there for over 2,500 years, because it sits at the perfect meeting point of land and sea.
Because Turkey sits between Europe and Asia, it has long been a crossroads. Food, music, words and ideas from many places come together here. You can hear it in the language, taste it in the food, and see it in the old buildings.