Green architecture is building using sustainable methods. It combines both construction and architectural methods and policies while keeping the environment in mind. In this issue, the manuscripts discuss various solutions for energy reduction and environmental sustainability. Two manuscripts address passive strategies to achieve the aforementioned by using cool clay tiles on roofs as a cooling strategy that saves energy and reduces urban overheating. Other papers in this issue discuss the importance of urbanization in developing areas by applying sustainable strategies including saving energy by utilizing solar energy. The authors have also explained the economic benefits associated with sustainable buildings such as driving designers to think about the environment. Saving power by applying sustainable policies, along with the rising energy prices, increase the demand for sustainable buildings. Sustainability, therefore becomes a driver for designers.