Design

Where Are Your City Limits?

An urban scholar is crowdsourcing city boundaries in this interactive world map to see what people include and exclude.
Alasdair Rae/Nick Martinelli

Where does the city end and its suburbs begin? You might think you know each nook and cranny of your hometown, but trying to actually draw a map of its outline from memory will rid you of that hubris.

In his new mapping project, Alasdair Rae, an urban scholar at the University of Sheffield, U.K. has asked people on the internet to draw what they consider as the boundary of their city. He explains why in an introduction to the map: