Robert Moses (1888 - 1981) was one of the most influential urban planners in New York's history. The sum of his completed public works amounts to $ 27 billion and includes beaches, swimming pools, parks, playgrounds, golf courses, zoos, bridges, parkways, expressways, housing projects, cultural facilities and two World's Fairs. They all impress not only by their numbers, but also by their quality, their importance for sustainable New York and the controversial methods which were used for their construction. During the 44 years (1924-1968), in which Robert Moses ruled New York's city planning, he modernized not only the city's infrastructure, he also expanded the public space for many recreational facilities and created milestones in engineering technology. This thesis analyses on the basis of three case studies (Sara Delano Roosevelt Park, West Side Improvement and Manhattantown Title I) the extensive life's work, deals with the methods used for their construction, compares the realized projects with their original ideal images and defines in addition Robert Moses' role within New York's city planning. He wanted to transform the metropolis into a "green car-utopia", to adapt it to the age of the automobile, make it faster and more efficient, provide sufficient open spaces and shift living to the Towers In The Park. These are all ideals, which can also be found in Le Corbusier's utopias.
Although most of the realized projects work well, they haven't fulfilled their previous holistic vision.