The world is changing every minute, which is actually a concept that's hard to get one's head around - that is until you see visual representations of these changes as depicted below. The cityscapes that you're about to see have changed so much in the space of a few decades that they're almost unrecognizable. Here are 13 "then and now" photos of some of the world's greatest cityscapes:
1. Rio de Janeiro, Brazil
2. Seoul, South Korea
3. Dubai, United Arab Emirates
4. New York, USA
5. Moscow, Russia
6. Paris, France
7. Berlin, Germany
8. Istanbul, Turkey
9. Singapore, Republic of Singapore
10. Tokyo, Japan
11. London, Great Britain
12. Rotterdam, Netherlands
13. Sydney, Australia
