Internet consists of a place where information flows to several nodes. However, the confusion due to the overwhelming information, finally leads to the disorientation.
   The urban unit of data diffusion filters the oversupply of information that comes from the city (e.g. by the departments of university which conduct a research and the technological centers) in order to transmit it back to the city, after the data processing. The diffusion of the information is the main role of the urban unit. Its function does not focus on replacing the existing places of information production but in the contrary it cooperates with them. As a result, it contributes to the data diffusion (meta-data) where the problem exists.
   Therefore, there are suggested three ways of the data diffusion: a) inside the building, with well-equipped presentation halls, such as amphitheatre, exhibition halls, installations etc. b) with several events in the city, that are supported by the mobile units, the vans and the info-kiosks. The main concept is the transmission of the information beyond the borders of the building site c) by internet, where everyone is able to download information related to the data used by the
building.
   Moreover, the building is a node in a network consisted of similar models of other cities or countries.