designer and illustrator Tim Fishlock posterized Harry Beck's famous alphabet made of sections and lines from the London Underground map
The Amsterdam Railway map redesigned in the shape of a tulip by Zero Per Zero.
The spiral tube map (spirals out from the most densely connected station)
Alice in Wonderland as a Subway Map | Brain Pickings
Sweet idea of Paul Middlewick's. As a pass time it might help familiarise right-brainers with London