The city as a complex and multidimensional system,is constantly interacting with its shaping factors, as well as with the facts of the undergoing era that are affecting it. Thepast years’intense growth rate has revealedmulti-leveled fundamental malfunctions. The spatial referenced fieldis cited in the western part of the city of Thessaloniki,where a significant reserve of rural abandoned spaces and buildings has been formed. The evolution of this urban space, as a product of proper urban planning or even as an unauthorized construction, leads to the commitment of large areas of land under the urban webto become military camps,which now constitute potentially free abandoned spaces for reutilization. The management of this abandoned urban reserve and its functional repurpose for the city, has always been a main issue. This project proposes the utilization of the former military camp "Alexander the Great", which is located in the western part of the city of Thessaloniki, by forming it into an urban agricultural park, focusing on local sustainable development and sustainabilitythrough the use of renewable energy sources and natural energy utilization, under an environmental scope. The vital synthetic idea for designing the military camp, is the organization of a "mosaic" of collective activities that will complement each other and operate altogether, in both open air and built space, creating a functional-aesthetic background of "communication" between the agricultural model of life and the urban political and economic space.