What's the Priciest City in the World?

iStock/Thinkstock

How do you define luxury on a global basis?  You can take a look at the top cities in the world for luxury living - Hong Kong, London, New York, Paris and Sydney (as shown), for example - and then see what the Knight Frank report has to say.

The Knight Frank survey ranks global cities based on a number of variables: economic activity, political power, quality of life, education and influence.

Learn more here.