Metropolis, a world association of major metropolises, has partnered with LSE Cities to develop a system of comparative indicators and collect the corresponding data for a range of major cities and metropolitan areas. The growth of large metropolitan areas like megacities, urban regions and corridors presents new challenges for the management of territories, however, there is a substantial lack of data. The Metropolitan Indicators research project will deliver a database for 50-60 metropolises around the globe. The indicators will refer to six overarching themes: metropolitan governance, economic development, social cohesion, gender equality, sustainability, and quality of life.