My thesis is an approach to the design of the city and of any segment of it by the simultaneous consideration of the following systems: -Systems of man-made land -Systems of man-made climate -Systems of separation -Systems of integration -Systems of linkage -Systems of hierarchy To support my thesis I propose to demonstrate the following: -Cities are the physical expression of a society. They are characterized by spaces formed with a basic technology in which social relationships take place. -The basic technology is man-made land and man-made climate. Therefore you can establish systems of man-made land and systems of man-made climate. -Social relationships are the interplay of activities within a social structure. As a result you can establish systems of grouping of functions and systems of organization of structures. - The formation of space with a basic technology involves placing things together, placing them apart, connecting different spaces and establishing an orderly whole. For that purpose you can establish systems of separation, systems of integration and systems of linkage. -In all the above mentioned systems we can establish hierarchies. On the other hand, cities are formed by three basic elements: The physical-environment, man and society. The physical environment can be broken down to nature, networks and shelters (the last two as a product of man and society's forces). -The study of nature, man, society, shelters and networks will allow us to determine how, where and why the systems should be utilized. The demonstration will be a project for a community in the city of Houston based on my thesis.