The process of urbanisation combined with global economic integration and local national specifities produce new spatial nodes of specialisation as well as urban sprawl. The traditional planning and policy strategies within these regions are increasingly inadequate, as the hierarchical urban form is transformed into something else. The functions of the traditional centers and subcenters as well as the new optimal locations for different actors are changing, which is visible in the accessibility, mobility and migration processes as well as in the local fragmentation of urban growth. This research cluster examines the spatio-temporal mobility and use of space as well as new forms of socio-spatial differentiation of the city region and the changes in its new form. In addition, urban socio-spatial phenomenon such as segregation, selective migration, housing and neighbourhood effects are to be examined.