Green buildings are gaining increasing attention around the world as a sustainable construction process. Ancient building structures were developed as non-impact buildings for the environment which were constructed from local and natural materials, renewable energies and simple designs. Conventional building construction has paved the way for environmental pollution which is badly affected on human being and ecosystems. Green building concept and green building rating systems have been developed for maintaining the sustainability in the construction sector. Sustainability can be assured and assessed through different criteria and stages of a building life cycle. Criteria of water efficiency, energy efficiency, site management, waste management, occupant health and comfort, material selection and their techniques are identified during this endeavour. In this book, Green infrastructures, such as green roofs and green walls which are used for reducing heat island effect are discussed. Moreover, green building concept, innovative techniques for green building and its applications are comprehensively discussed in the book.