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In Japan, there is this really neat water fountain at the Osaka Station City. It features a dot matrix water clock that shows the time as well as astonishingly complex graphics, all with drops of falling water. It is amazing to think of the engineering and creativity that must have gone into this fountain. It is really something nice to have in a place where there is a lot of waiting too because it can get boring waiting around for transportation! Check out the link below if you want to see a video of this fountain in action.
Image Source: http://laughingsquid.com/osaka-station-water-clock/