NextBillion - An Initiative of the William Davidson Institute at the University of Michigan

Metropolis, World Association of the Major Metropolises, is the global network of major cities and metropolitan areas.

With nearly 140 members and 30 years of history, Metropolis is the leading association that gathers the governments of the large urban agglomerations worldwide.

It serves as the hub and platform for metropolises to connect, share experiences and mobilize on a wide range of local and global issues, in addition to being the focal point of worldwide expertise on metropolitan governance.