METREX, the Network of European Metropolitan Regions and Areas, provides a platform for the exchange of knowledge, expertise and experience on metropolitan affairs, and joint action on issues of common interest. The Network has members from some 50 metropolitan regions and areas and partners in many others.

METREX contributes the metropolitan dimension to policies, programmes and projects on a European scale. The Network is a partner of European institutions, the research community, governmental organisations and other networks.