| 1 | Welcome to Four Seasons Hotel Istanbul at the Bosphorus. | |
| 2 | Find: The seabed river flows from Turkey's Bosporus | |
| 3 | The boat is almost deserted and the Bosphorus lovely in the morning light. | |
| 4 | A 3-D radar image, using false colour, of the undersea river channel where it enters the Black Sea from the Bosphorus Strait. Photo: University of Leeds | |
| 5 | Ferries cross paths in the Bosporus, the water body that represents the boundary between the European and Asian sides of Istanbul. |