Thanks to Chris Helenius for bringing this amazing map by Richard Saul Wurman (founder of the TED Conference amongst other things) to my attention. In the course of research for this post, I also discovered that Mr. Wurman was responsible for these beautiful maps of Philadelphia from the book Man-Made Philadelphia: still the most-visited post on Transit Maps by far.
But onto the map itself.
Firstly, this is not a map of the Tokyo subway, as many commentaries that I have come across state. It actually shows two lines of the JR East rapid transit network that very cleverly help to define “Tokyo”: the circular loop Yamanote Line, and the cross-town Chūō-Sōbu Line. The stations along the Yamanote Line all have points of interest listed, while the Imperial Palace complex is shown for reference within the circle.
Secondly, this is beautiful. Abstracted, clarified, simplified information. Five stars.
Source: Edge-Serpentine-Maps Gallery