Breathtaking: World's 25 Most Beautiful Polluted Sunsets

By Tom Randall - 2011-11-28T03:40:43Z

Photograph by Bialobrzeski/laif/Redux

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#16 Ostrava, Czech Republic

The pastel hues of the evening sky compete with a rainbow of artificial lights at a shopping park in Ostrava. Factory chimneys and cooling towers form the backdrop.

The accuracy of pollution rankings may be limited by the number and location of measurement devices in each city, according to the World Health Organization.