Definitely more a piece of art using the Moscow Metro as inspiration than an actual usable map, but still noteworthy. Taking the spoke and hub nature of the Metro completely literally, the work shows the stations along each line in the form of concentric rings: simple, but graphically effective. I have no doubt that a seasoned Muscovite Metro commuter would be able to locate the stations they use quite easily.

Source: aircoooled karma/Flickr