As a consequence of the increasing world population and economic growth, demand and consumption of many goods have risen steadily. The most upcoming regions face supply shortfalls, especially in terms of water and energy. These two topics, water and energy, are shadowed by the present and future influence of global warming, which threatens the development of the affected countries.To deal with this challenges, impressive Macro-Engineering-Projects (MEP) with complex constructions have been developed to serve multi-purposes. Multi-risks and many problems are hidden behind their massive walls and endanger the expected success and effectiveness of the project. MEPs are large technical attempts to generate or make additional amounts of water and energy available, including large dams, endless pipelines or the creation of new waterbodies.To find out more about the characteristics of MEPs, this master thesis summarizes the state of the art of research and science concerning reiterating phenomena and special features of MEPs. The theoretical chapters are followed by eleven of the most impressive projects and visions of the twentyfirst century worldwide, including interesting details and scientific facts. The work is focused on the social, economic and environmental consequences, that come along with the implementation of the projects. Some projects collapsed short after their beginning, while decisions on other projects are about to be approved soon and speculations about the value of future visions rotate.The wide range of this work with the strong emphasis on important details in combination with balanced examples and theoretical basics are unique in this relevant area. Further intensive research needs to be done to find out more about the still increasing bigger designed projects.