Where and why women do not feel safe after dark? How difficult can become a normal transition of the road for the elderly? The lecture is devoted to the idea of the city, which is fair for all: this idea brings together visible examples from more than 60 pilot projects of various scale, aimed at improving the quality of life of marginalized groups in Vienna. We'll talk about the different awareness of the urban environment of users, their needs, and, as a result, the implementation of this knowledge in decision-making.