Urban sprawl is one of the megatrends in large cities and the major problem in Vienna´s urban planning. The demand for recreation areas, the dream of an own house with a garden and cheaper grounds have been a high motivation for many citizens to settle outside of the city. The consequences can been observed at the results of the last national census. The inner districts of Vienna have significantly lost population, the areas around Vienna had a very high increase. The political instruments of city and regional planning did not react to the trend of urban sprawl and even accelerated these developments with some land use regulations. (see programs such as “Wohnen im Grünen”, “Neue Siedlerbewegung”) . So we now have lots of residential areas with nearly no social infrastructure, public transport or stores in short distance. Residents highly depend on their cars and become part of the daily traffic collapse when eg driving to work.Besides political instruments such as tax policy or regional planning policy the major approach for Vienna must be to develop concrete projects in the city offering those qualities people are asking for. There is no doubt that new residents with (or near to) recreation areas, individual free space such as terraces or balconies, community areas, participation will positively react to these qualities and stay in the inner districts of Vienna.One concrete idea in discussion is the development of a new district in the area of handelskai at the right riverside of the Danube. The term 24th district is more symbolic but shows the potential. New technical solutions in covering the handelskai can be improved for a new access to the Danube riverside as a living area not only for new projects but for all residents. The public infrastructure is existing, and potential is high. The aim is to develop a concrete sustainable district as a concept against urban sprawl in Vienna.