Amsterdam, Houston, Mexico City, Paris, São Paulo and Zurich have all grown to be global cities. Today, several other factors other than the size of the city are being considered. Initially, global cities were ranked depending on their size.

To be considered a global city, an urban center must prove it enjoys a significant global advantage over other cities and serves as a hub within the world economic system. Other Alpha + cities include Shanghai, Tokyo, Dubai, Singapore, Hong Kong, Paris, and Beijing. Although the city of Tokyo is the largest in the world with a population of about 38,000,000, it is considered an Alpha + city, one level below the cities of New York and London which are considered Alpha ++ cities. Cities are categorized differently depending on the role they play on the global scene. They portray the economic, social, and political state of the country and its people. What Is A Global City? London is considered to be an Alpha ++ city.Ĭities are centers of innovation and businesses.

Global cities are defined