When the global ranking is considered, Istanbul which was called Constantinople in the past, ranks as the fifth most crowded city. Back in those days, Istanbul was also the largest city in the world. As January 2014 data shows, the population of the
When the global ranking is considered, Istanbul which was called Constantinople in the past, ranks as the fifth most crowded city. Back in those days, Istanbul was also the largest city in the world. As January 2014 data shows, the population of the
