So London and Paris have cemented themselves as the most world class cities and well known in Europe.
What would be the third most important / world class city in Europe?
It feels like it has to be one of Amsterdam, Madrid, Barcelona, Milan, Berlin, Istanbul, Geneva, Brussels, or Frankfurt right?
Another edit for the definitions per wiki:
Alpha ++: London
Alpha +: Paris
Alpha: Amsterdam, Frankfurt, Madrid, Milan, Warsaw
Alpha -: Berlin, Brussels, Dublin, Düsseldorf,Lisbon, Munich, Stockholm, Vienna, Zurich