City is made up of diversity and density. Diverse factors make activities and different relationships in a city. These are very sensitive to other factors’ changes. Their various responses make city dynamic and finally characterize the face of a city or a town. Buildings are one of dynamic factors in a city. The building facade which determines building’s identity marks the transition between outside and inside. The facade has a strong relationship between building programs and urban activities. Their looks make a huge effect on urban environment. But buildings’ configuration is fixed once design choices are made. Buildings are conceived as a rigid objects and inflexible, unresponsive, and unsustainable. Considering that buildings are the largest contributor to the city environment, building should be responsive to changes and facade performance should be more active to building programs. Adaptive building facade will be the means that can address these challenges
