Vienna retains the top spot as the city with the world’s best quality of living, according to the Mercer 2012 Quality of Living Survey. Zurich and Auckland follow in second and third place, respectively, and Munich is in fourth place, followed by Vancouver, which ranked fifth.

In the United States, Honolulu (28) and San Francisco (29) are the highest-ranking cities, followed by Boston (35). Chicago is ranked 42nd, while Washington, DC, is ranked 43rd. Detroit (71) is the lowest-ranking of the US cities that Mercer surveys.

Düsseldorf dropped one spot to rank sixth followed by Frankfurt in seventh, Geneva in eighth, Copenhagen in ninth, and Bern and Sydney tied for tenth place.

Antananarivo in Madagascar topped the list of cities with the poorest quality of life in the survey by Mercer's.

Here are the top 10 cities in the world for quality of life:

1. Vienna, Austria

2. Zurich, Switzerland

3. Auckland, New Zealand

4. Munich, Germany

5. Vancouver, Canada

6. Dusseldorf, Germany

7. Frankfurt, Germany

8. Geneva, Switzerland

9. Copenhagen, Denmark

10. Bern, Switzerland

Here are the bottom 10:

1. Antananarivo, Madagascar

2. Bangui, Central African Republic

3. Lagos, Nigeria

4. Abuja, Nigeria

5. Conakry, Guinea

6. Kigali, Rwanda

7. Brazzaville, Congo

8. Sana'a, Yemen

9. Baghdad, Iraq

10. Port-au-Prince, Haiti