In 2017, for the first time, Deutsche Bank has included a ranking of the quality of life in 47 cities around the world. The ranking is based on eight sub-indexes compiled by crowd-sourced information database Numbeo, which create a broad picture of what it is like to live in different cities.
The indexes are: Purchasing Power, Safety, Health Care, Cost of Living, Property Price to Income Ratio, Traffic Commute Time, Pollution, and Climate.
Broadly speaking, the cities that rank highly are in the northern hemisphere in developed western economies, although several cities from nations like South Africa, Australia, and New Zealand make the list, with one even at the very top.
Check it out below:
http://www.businessinsider.com/world-cities-with-best-quality-of-life-deutsche-bank-mapping-the-worlds-prices-index-2017-5