2. New York

Hard on the heels of London, New York only narrowly missed out to its British rival in the Forbes list. The Big Apple is home to most of the world's top investment banks and hedge funds. Its stock market trade levels are 10 times that of London and four times that of Tokyo. It is a global leader in media, advertising and the music industry and dominates in the realms of fashion and luxury. Visitors spend more money in New York than any city in the world thanks, Forbes suggests, to its iconic landmarks.