A freelance digital artist since, living in Geneva, has been experimenting with geographic data and a software programme called World Machine. The results are amazing!
World Machine lets the users create realistic 3D terrain and automatically creates geologically accurate features such as meanders, ripple-pool sequences, and realistic valley walls. World Machine also lets users simulate the effect of erosion.
Using World Machines powerful erosion modeling tools, the artist manipulated city maps to achieve a unique erosion flow effect.
The results look like a bird's eye view of a post-apocalyptic world being washed away. Among the cities featured are Tokyo, Rio de Janeiro, New York, Paris, Cairo, Beijing, and Venice.
source - http://chaoticatmospheres.com/flowing-city-map