Stunning images: The rise of megacities

A megacity is a metropolitan area with a total population of over 10 million people. There are 21 megacities as of 2011.
Take a look at amazing photos of megacities...

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A view of the city skyline from the Shanghai Financial Center building.  

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Tokyo's skyscrapers are seen from a viewing deck of Tokyo Tower.

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The "Christ the Redeemer" statue in Rio de Janeiro.

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Vehicles drive on flyovers during the evening rush hour in central Shanghai.  

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Rain clouds gather over the city of Sao Paulo.

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The view from the first observatory deck of the Tokyo Sky Tree in Tokyo.

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Early morning haze is seen over a nearly empty Tahrir Square in Cairo. 

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An aerial view of Indonesia's capital city of Jakarta.

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A view of the financial district of Pudong on a rainy day in Shanghai.

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Construction workers prepare steel rods as they work on a building site in central Beijing.

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The China World Trade Center Tower III, the tallest building in Beijing. 

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A general view of uptown in the southern Chinese city of Guangzhou.

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A shanty town is seen in front of the skyline of Manila's financial district of Makati City.

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Traffic moves during the evening as the Howrah Bridge is lit up in the background in the eastern Indian city of Kolkata.

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Buildings and roads are seen from the window of an airplane over New Delhi.

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Clouds pass over the skyline of midtown Manhattan in New York.

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An aerial view of a central district of Mumbai.

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A general view of the skyline from the Makati City Hall in Manila.

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A view of the sky line with the Cairo tower (L) and the Nile river is seen in downtown Cairo. 

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A view Downtown Los Angeles, California.

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Monsoon clouds gather over the Mumbai skyline. 

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Storm clouds are seen above the city in Sao Paulo.

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The Bosphorus Bridge is illuminated in Istanbul.