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In pictures: These are the world's 10 cleanest cities

The cities were ranked by the World Health Organisation. Singapore made it to the list, as did London and Paris
1. Helsinki in Finland
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1. Helsinki in Finland

Helsinki is the cleanest city in the world, according to the World Health Organisation.Helsinki has a population density of 2,739.36 people per square kilometre - by far the highest nationally.
2. New York in USA
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2. New York in USA

New York City (file photo)

3. Kobe in Japan
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3. Kobe in Japan

Kobe in Japan is the third most cleanest city in the world. It was one of the first cities to open for trade with the Western world in 1868, and as such, is known as a cosmopolitan port city.

Kobe was hit by devastating earthquake in 1995 in which several hundred residents were killed and wounded. The city recovered quickly to emerge as one of the prime cities in the world.
4. Wellington in New Zealand
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4. Wellington in New Zealand

Wellington, the capital city of New Zealand, stands at fourth position on the cleanliness scale. More people use public transport in Wellington than anywhere else in New Zealand.

Wellington region has the highest proportion of working age population and the highest median income in the country.
5. Singapore in Asia
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5. Singapore in Asia

The Asian city-state has been ranked No 5 in the cleanliness index by WHO. Singapore's population is equivalent to 0.08% of the total world population.

Singapore is a global commerce, finance and transport hub.
6. London in UK
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6. London in UK

File photo.
7. Freiburg in Germany
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7. Freiburg in Germany

The 'eco city' of Germany stands at seventh position in cleanliness. The city is known for its medieval minster and Renaissance university, as well as for its high standard of living and advanced environmental practices.
8. Paris in France
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8. Paris in France

The capital city of France stands at eighth position in cleanliness. It is mostly called as the 'Fashion Capital' of the world. The population density of the city is 21,000 people per square kilometre.
9. Brisbane in Australia
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9. Brisbane in Australia

The capital city of Queensland, Australia, stands at ninth position in cleanliness. It is the third most populated city in Australia after Sydney and Melbourne. Brisbane is one of “most liveable cities” in the world, according to World Population Review.
10. Oslo in Norway
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10. Oslo in Norway

The capital of Norway stands at the tenth position in cleanliness. It is the governmental and economic centre of the country and a centre for trade, industry, shipping and finance. Oslo is also the fastest-growing city in Europe.