The built environment can be described as a harmonious machine, made up of various integral parts working together as a whole. This expression is reflected in this book where each author discussed and shared insight on recent findings related to different aspects of the built environment. It is the differences and contrast from the varying fields which shows the holistic side of the build environment, while sustainability as the core unifying factor bringing all the fields together. In this book, comprehensive reviews and outcome from research in the fields of design, energy efficiency, renewable energy, urban design, conservation and housing are compiled and systematically presented.