An old-school interactive Metro map in Paris. Simply press one of the 360 or so buttons underneath the map, and a path lights up from your current location to your chosen destination. Who needs a fancy touch screen kiosk? I particularly like the way that the furtherest reaches of the RER lines are compressed into diagrammatic form to allow the centre of Paris to be shown as large as possible.

This particular example is still in use, despite it being around ten years out of date: the extension of Ligne 14 from Madeleine to St. Lazare (which opened in December 2003) is shown as being under construction.

Source: Hervé Platteaux/Flickr