Alternative to the great mosque of Marseille.Marseille is home to one of the largest Muslim communities in France with a large percentage concentrated in its city centre. Due the heterogeneous composition of this Muslim community - a collection of different ethnic backgrounds and religious experiences of Islam - is a specific formal architectural identity quasi unexistent. The need for a specific identity which represents the diversity inside the community is real. This religious identity will only be accepted by the mass as an abstract symbol, which Muslims can relate to, and through it affirm their presence. In general is the notion of 'mosque' diverse in its appearance. Its architectural development is based on regionalism and abstract religious properties. There are distinctive features proper to the spatial imagery and representation of Islam, such as the interconnection with the context, the orientation towards Mecca and many spacial geometrical abstraction (non figurative). The introduction of this notion in a Western European urban fabric must transcend its stereotypic denotation and develop its primal formal output into space as subject. Depending on the connotation, one can assume that the imagery or the production of a spatial happening can take variable appearances (not limited to visual) or configurations. These appearances or variable configurations unfold, in function of particular properties, from the perception and the production of space into a spatial experience. The spatial unfolding for a period of time, is characterized by a sequence of events, but is absolute in time and is therefore not (necessarily) linked to the past or the future. It is real, it can be mnemonic, and there is no illusion. This is the link or interconnection between knowledge, memory, conscience and the unknown (abstract) or the not known (concrete).