Approach: It is not an innocent act, today, to summon up water as a component of the urban landscape. In past times, a river, a spring, a well, a fountain was essential, not only to provide this vital element: water, but also, playing an important social role, to offer a primary meeting point. Water, now, is freely running from our taps, showers, toilet flushes…, stripped of its original function, the fountain, today, is condemned to feed our nostalgic memories or, at best, to become a merely decorative object. Supposed to be silent (not to disturb people around), cosmetic (in this case, ironically, to conceal an underground car park), water is, because recycled, even not drinkable…