Tom Carden’s Travel Time Tube Map creates isochronic maps of the London Underground.
This is a Featured image, which means that it has been identified as
one of the best examples of OpenStreetMap mapping, or that it provides
a useful illustration related to the OpenStreetMap project.
If you know another image of similar quality, you can nominate it at
http://wiki.openstreetmap.org/wiki/Featured_image_proposals
