Under the title "The European urban fabric in the 21st century", the Fifth European Summit of Regions and cities was organised by the CoR in partnership with the City of Copenhagen and the Capital Region of Denmark. The Summit brought together over 300 mayors and presidents of regions from the 27 EU Member States with leading architects, urban planners and researchers in urban development with a view to ensuring that sustainable urban development features more prominently on the European and world agendas.