I came across this project created with Processing. At a first glance, it looks like a GPS map, however it actually represents bike routes in three cities: New York, Berlin, and London. These cities were chosen due to their large biking populations and programs (Citi Bike, Call a Bike, Santander Cycles). The birdseye view allows viewers to interactively view information about the biking patterns of the given city. They can see both the routes and locations of the stations.
To read more: https://uclab.fh-potsdam.de/cf/