More and more people are living in cities – the process of urbanization cannot be stopped. To ensure a good quality of life despite increased energy requirements and environmental pollution,sustainable developments are needed. Technical innovations are in demand – especially in the field of communication, information, security and transport. The Smart City is planned strategically – it saves energy, reduces emissions and switches to renewable energy. A fixed element of the city of the future is MAST HAVE – the multifunctional design structure made by Fonatsch.