In 1958, Yona Friedman published his first manifesto : “Mobile architecture”. The mobility in question is not the mobility of the building, but the mobility of the user, who is given a new freedom. “The building is mobile in so much as any sort of use whatsoever by the user or a group must be possible and realisable”, Friedman explained. Mobile architecture is thus the “dwelling decided on by the occupant” by way of “infrastructures that are neither determined nor determining”. Mobile architecture thus meant an architecture that was available for a “mobile society”
“The Spatial City” is the most significant application of “mobile architecture“. It is a spatial structure raised up on piles which contains inhabited volumes, fitted inside some of the “voids”, alternating with other unused volumes. This structure may span certain unavailable sites, and areas where building is not possible or permitted (expanses of water, marshland), or areas that have already been built upon (an existing city). It may also be used above farmland, and introduce a kind of merger between countryside and city. This city built on piles is a three-dimensional structure designed on the basis of trihedral elements which operate as “neighbourhoods”where dwellings are freely distributed.
The Ville Spatiale of Yona Friedman