The city of Athens, economic, political and administrative capital of Greece since 1833,has been developed upon ancient settlements of 2000 years and more. The distribution ofeconomic activities in urban tissue has been determined by a “laiser faire”, under theinfluence of continuous political pressures. Market, with successive changes, has formed afunctional “situation of balance’, so much in the thematic level as in their arealdistribution.For this reason, the Basin of Athens constitutes a suitable territory for research of “urbanfunctional organicity” as it is shaped by the free offer and demand of space for theinstallation of urban activities. This localisation is fixed from their ‘functionalrequirements’ and the essential “environmental compatibilities”.