This project began in the north of France from photographic images taken by satellites on which I traced a path to my desires sandstone. Six months later, I landed at Marseilles do not know this city. I confront the reality on the ground and must change this path previously established, and I realize the obstacles both natural and manmade. Strangely it raised awareness of a historical city. On urban development too fast with choices often incomprehensible, absurd suggesting that planners are far from the thought of living together, deprived of this awareness of the city. Getting lost between benchmarks and actual topographic maps, are good ways to identify the limits of this city. Pending the passage of the card to the true reality raises puzzles, and more succite curiosities, which dissipate gradually as the journey, informed by his successive passages, his whereabouts between information, maps and documents past and present and the physical reading of the territory. Here, the card is at the heart of an approach to space in a manner quite paradoxical as it seems to refer less to a physical object as a practice.