"Like the Citröen and the cathedral, the London Underground Map was produced in relative anonymity, the lifework of an unacknowledged, if not unknown, artist. It, too, has been consumed "devoured" in one accountby "a whole population" both as an object-in-use as well as a way-of-imagining space. Its magic is such that it, in turn, "consumed" the spatial relations which existed before its creation."
[via InfoDesign]
Design Issues: The London Underground Map: Imagining Modern Time and Space