The polycentric metropolis learning from mega city regions in europe edited by peter g hall and kathy pain jingjuan jiao jiaoe wang fengjun jin impacts of high speed rail lines on the city network in china journal of transport geography 10 francesco zullo models of urban land use in europe international journal of . A new 21st century urban phenomenon is emerging the networked polycentric mega city region developed around one or more cities of global status it is characterized by a cluster of cities and towns physically separate but intensively networked in a complex spatial division of labour this book describes and analyses eight such regions in north west europe for the first time this work . Polycentric global metropolitan city regions are geographical units composed of between 10 and 50 cities and towns physically separate but functionally networked clustered around one or more central cities and drawing enormous economic strength from a new functional division of labour engaged within a large scale functional urban region. Request pdf the polycentric metropolis learning from mega city regions in europe book description large polycentric city regions pose perplexing problems to social scientists and policy makers