Cycling is a complex phenomenon, which can be obscured by its apparent simplicity. Being an almost perfect human-machine hybrid, cycling is deeply rooted in a plethora of socio-technological systems. Unraveling the Cycling City bundles the state-of-the-art knowledge that emerges from research and practice on the Dutch cycling system. As such, it provides an easily accessible platform to learn about important causes and effects, to open minds for the complexity of the entire system and to support group deliberations around the world.