Water management of “smart” buildings and cities

Now is the time to take our future more seriously and start providing solutions for tomorrow´s world. The new notion or significant specification of the term “BLUE to GREEN” infrastructures in buildings in the modern information age is the expression of the sustainable development of a „smart city“ society and beyond. We introduce our experimental platforms representing different types of green roofs, green and water walls as possible solutions. These experimental sites in the University Campus were created on the basis of researche dealing with green roofs and their retention qualities, as well as green walls and their impact on the microclimate and the possibility of using rain and gray water that could be filtrated through the media of these structures. The paper describes the world-wide conditions on the basis of which this issue is up to date and addressed. The outputs from the individual measurements will be related to water cycle issues, green walls and roofs constructions.