This thesis aims to explore the meaning of the smart-city concept, as well as which characteristics a city must have to become ‘smart’. For the purpose of conducting this analysis, various existing definitions were drawn on and compared. The result was that several factors were mentioned across different studies, for instance mobility, tight networks, utilization of modern technology, increased efficiency, citizens’ participation, an overall high quality of live, protection of the environment and a sustainable use of resources. Furthermore, this thesis describes a completed (2006) project in Vienna, Mühlweg, and elaborates on the applicability of smart-city characteristics. It was concluded that the sample project successfully incorporated several ‘smart’ aspects, particularly in terms of ecological construction techniques. Nevertheless, there is still room for improvement regarding the implementation of further smart-city aspects.