World Cities Quiz - Global Sherpa. Global Cities. What Is a Global City? We hear a lot of talk these days about so-called “global cities.”
But what is a global city? Saskia Sassen literally wrote the book on global cities back in 2001 (though her global cities work dates back well over a decade prior to that book). Andrew Marr's Megacities - Living In The City - Episode 1. "On Global Cities" by Richard C. Longworth.