Cities Archives - Unbelievable Facts

Underground cities

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10 Astounding Underground Cities Around the World

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Another Side of New York City in the 1970s, Before a Three-Decade-Long Environmental Clean-Up

Mud Skyscrapers Yemen

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There exist 400-year-old cities in Yemen which have skyscrapers made up of mud bricks

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15 Little Known Facts About The City That Never Sleeps: New York City
by Unbelievable Facts Apr 13, 2016, 9:52 am