Sustainability is considered a leading term through various world aspects like architecture, transportation, manufacturing and business. It guaranteed the continuity of many fields by protecting the natural environment from harmful human interferences for their own comfort, without recognizing that most of their energy consuming solutions are in fact leading to many universal changes that threaten the ecological equilibrium of the world. Furthermore, urban landscape Architecture allows the architect to create green cities where the built and the natural environments are interwoven. Therefore, by combining the previous terms together, sustainable landscape architecture will be formed and will achieve balance between buildings and their inhabitants that in return will lead to sustainable development in cities and the whole world. The paper analyzes sustainability from an environmental point of view and then a focus is undertaken on landscape planning, environmental impact design and sustainable development. Furthermore, there will be a review for keywords' definitions, landscape elements and the route to sustainable cities. Finally, the researcher combines together the principles of sustainable urban landscape and those for sustainable development, leading to a new methodology that will not only enhance the landscape ecological performance in urban spaces, but will also protect habitats and strengthen their sense of belonging and identity. Finally, this new vision will be applied on a casestudy, Moharam Pasha Compound in Alexandria, showing how it will enhance inhabitants' life and achieve environmental, economic, aesthetic, social and psychological Benefits.