The Economist Intelligence Unit survey ranked 140 cities based on research involving resident experts and in-house analysts.
Cities were scored on political and social stability, crime rates, access to quality health care, cultural events, the environment, education and the standard of infrastructure.
Below are the 2011 top ten world live-able cities Ranking:
1. Melbourne, Australia
2. Vienna, Austria
3. Vancouver, Canada
4. Toronto, Canada
5. Calgary, Canada
6. Sydney, Australia
7. Helsinki, Finland
8. Perth/Adelaide, Australia
10. Auckland, New Zealand