Although the Face of Tomorrow project seems to have come to a halt after 2004, the idea that cities assimilate their migrants and eventually their inhabitants mix giving place to new generations of cosmopolitan beings with ancestors from all over the globe is still a powerful one.
The large metropolises of the world are magnets for migrants from all parts of the planet resulting in new mixtures of peoples. What might a typical inhabitant of this new metropolis look like in one or two hundred years if they were to become more integrated?
In Turkey and particularly in Istanbul, situated as it is at the crossroads of Europe and Asia, of the Mediterranean and the Black Sea, you can see how this process has been at work over the last thousand years as waves of humanity from Central Asia, Arabia, Greece and Rome have been absorbed. The resulting population is fairly uniform suggesting that if you could combine all the faces in a city right now you would be looking at the future face of that city.
With a larger inventory of faces it would be possible to compare how highly cosmopolitan cities differ from those with a strong hegemony of a predominant culture.