The requirements for buildings, facilities and services at International Expositions (Expos) are explored in this book which contains photographs, illustrations, diagrams and descriptions of numerous case study examples from major Expos held throughout the world over the past several decades. Requirements for both Registered and Recognized Expos are presented including the more recent examples of Recognized Expos (Astana Expo 2017, Yeosu Expo 2012, and Zaragoza 2008).