Landscape architecture today in the beginning of twenty-first century has three new features; first feature is a new trend which is landscape regeneration of world's riverfront which they were neglected for a long time. Second feature is a new decision-making method by involving the lay public in the design process in all stages. The third feature is the wide use of computer technology in landscape architecture with different ways, especially in the representation of design ideas, so computer simulated visualization is considered now an essential tool in design processes. From previous three...