Since the 1980s, and with the creation of the metropolitan area of Medellin, the interest of the Colombian planners by the phenomenon of urban sprawl has increased dramatically. Therefore, has been taking awareness of the importance and the uniqueness of the suburbs to a common problem in many cities in Colombia: field and nature intertwine with the built-up areas of the city, thus creating a patchwork of isolated parkland inserted in a discontinuous mesh, formed by infrastructure networksfacilities and services that urban centers spread in the farm belt. Returning these characteristics can be diagnosed that peri-urban areas of big cities of Colombia set a third territory where the city’s development, protection and valorisation of landscape agronatural represent a great challenge for the urban, territorial and environmental planning. Lamentablente, theories related to the development and the sustainability of this territory are still very vague, despite initiatives and specific proposals that have appeared in some cities in Colombia, through the work of some international agencies and other associated municipal entities. Surely this situation is due to the imbalance caused by the disproportionate attention that the State and the private sector have given to the construction sector, neglecting rural areas and leaving aside the planning instruments needed to achieve a comprehensive geographical space. This problem is exacerbated because of the strong political emphasis that some sectors of opinion and management granted to the distribution of competences between the State and the local authorities, creating a fundamental problem in the formulation of appropriate policies for the protection of the peri-urban areas. Deficiencies in the system of the metropolitan areas and the lack of adequate instruments of technical and political nature, are evidenced here to act effectively in the land-use planning existing, in order to provide new perspectives of development in peri-urban areas, through policies of use and occupation of land made in accordance with a series of objectives previously agreed with the population in general. . .