How can Mega-Events, such as the 2010 FIFA Soccer World Cup™ in South Africa, the 2010 Commonwealth Games in India as well as the 2016 Olympics in Brazil, be used as catalysts for sustainable urban development? Based on three country case studies the authors analyze challenges and opportunities that come with such events. The aim of the manual is to assist future host cities, particularly in a developing country context, and promote the hosting of such events in an environmentally as well as economically and socially sustainable manner.