The 30 Cleanest Cities in the World

Reykjavik, Iceland

Located right next to the Arctic Circle, Iceland is one the cleanest countries in the world, so it is not surprising to see its capital Reykjavik among the cleanest cities in the world. There was no urban development in the city until the 19^th century. Even now, Reykjavik remains one of the cleanest and greenest cities in the world with practically no pollution.