Once hemmed in by old city walls, then by the Boulevard Périphérique, the Paris Métro has rarely ventured outside the city proper into the suburbs. That is about to change with the ambitious “Le Grand Paris” plans shown here. Extensions of the existing Métro Lines 11 and 14 will take them far out into the Île-de-France, while new Lines 15, 16, 17 and 18 will encircle the region with orbital routes. Extensions to the RER E and a comprehensive network of regional trams will complement the system. All this is planned to be completed in just 17 years’ time, by 2030.

Source: Reblogged from mapsontheweb, original image source from Liberation.fr (March, 2013)