The Road Trees project has produced animated isochrone maps showing road networks erupting fractally from a single departure point.
An isochrone in a map shows with the same color all points from which it takes the same time to arrive to a specific location.
We chose 10 locations around the world and for each of them constructed the isochrones on top of the road network of the corresponding country. Consequently, we plot these isochrones using a dynamic color palette representing the diffusion from the location of interest to any other point of the road network.
Unexpectedly, we found that the isochrones follow beautiful fractal patterns, very similar to networks shaped in the Nature by rivers, veins, or lightnings.