Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Adrian Smith + Gordon Gill Architecture (AS+GG), an architecture firm and design firm based in Chicago, is engaged in the design and development of energy-efficient and sustainable architecture. AS+GG designs buildings, cities, masterplans and components of these. It creates designs for an international clientele with projects located throughout the world. The primary uses of these designs are civic, commercial, cultural, hospitality, residential and mixed-use. AS+GG also specializes in supertall skyscrapers.The Masdar Headquarters, a 1.5-million-square-foot complex in Abu Dhabi, is part of Masdar City an energy, climate and sustainability development and initiative of the Abu Dhabi Future Energy Company (Masdar). In early 2008, AS+GG won the international competition against finalists Foster + Partners, Atkins, Murphy/Jahn, and Skidmore, Owings & Merrill