You’ve seen the maps of population density. You’ve seen the jokes. But you haven’t seen population at high granularity in a 3-D view. Matt Daniels for The Pudding used a mountain metaphor to show the peaks and valleys of population around the world.
You get more out of the data in this view than you would the overhead, which tends to obscure the variation in large cities. Although if you must, Daniels also provides the typical view to reference.