Take an eye-popping look at the greatest structures and machines ever created as we focus on some of the world's modern-day miracles of construction. See the dramatic installations 50 meters above ground. To make such a small and highly urbanised place liveable, Singapore is embarking on its most ambitious project to date. Come summer , the eyes of the world will be focused on a sporting megastructure: London's Olympic Stadium - the centerpiece of the Games. Nimitz-class supercarrier for the U.
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