A look at the US Navy's biggest submarine, the USS Pennslyvania.
(01:51)Revealing the technological leaps that have enabled the construction of the world's biggest oil rig.
(01:24)Photos of Heathrow's new Terminal 5.
Big, Bigger, Biggest examines the various engineering leaps that helped these structures become historical giants. How did bridges evolve in size from simple bamboo walkways to modern marvels such as Japan’s Akashi Bridge? And what advances have allowed buildings to grow from a few storeys in size to the modern skyscraper?
Skyscraper and Bridge examine the world’s tallest building, the 600-m...
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