Top 10 Cleanest Cities

10. Calgary, Canada

Calgary, Canada

9. Helsinki, Finland

Helsinki, Finland





8. Adelaide, Australia

Adelaide, Australia





7. Copenhagen, Denmark

Copenhagen, Denmark





6. Ottawa, Canada

Ottawa, Canada





5. Kobe, Japan

Kobe, Japan





4. Honolulu, Hawaii

Honolulu, Hawaii





3. Oslo, Norway

Oslo, Norway





2. Minneapolis, Minn.

Minneapolis, Minn





1. Wellington, New Zealand

Wellington, New Zealand