Self-confessed map addict Mike Parker explores modern cartography.

How do you make sense of a strange city and turn a bewildering maze of streets into a map that's instantly informative to a confused visitor?

Mike Parker hits the city streets to find out what makes the ideal map for steering us through the urban jungle.

He meets the man who has made it his mission to single-handedly create a new map of Manchester, and discovers how digesting the entire London A to Z makes cabbies' brains bigger.

Producer: Jeremy Grange

First broadcast on BBC Radio 4 in March 2010. Show less