Green architecture, green buildings and eco-friendly cities are one of the modern trends in modern architectural thought that deals with the relationship between buildings and the environment. The importance of this research appears in dealing with the problems of urban development as the modern buildings lacking protection from solar energy and radiation. One of the most important structural problems is the exposure of buildings to high temperatures  which lead to consumption of energy either to reduce the internal temperature of the building or to heat the building as a result of loss of heat. The glass facades are used extensively in the buildings to increase the natural lighting in the interior spaces. As a result, the penetration of the sun into the building greatly results in increased heat transfer through these glass areas. Integration of buildings can be used through photovoltaic matrices in different images. This integration can be done by inserting matrices within the architectural configuration of the outer surface of the building in a clear symmetrical architectural pattern or by integrating matrices as part of the building so that it is not visible for  the viewer. The negative solar design patterns that reduce energy consumption, as well as positive solar systems, have been reviewed and how these systems can be used to improve energy efficiency.