Imagine driving across a bridge near the North Pole, leaving Alaska at one end and arriving in Siberia at the other end. What if you could visit an entire city built within a pyramid in Tokyo Bay or speed from New York to London in just an hour through a tunnel under the Atlantic Ocean? These are just some of the mega-projects that come to life as builders and engineers design and construct the largest, most outrageous and awe-inspiring projects ever conceived. Each got-to-see-it-to-believe-it episode travels to locations at every corner of the world and features jaw-dropping computer animation, breathing life into these fantastic - yet possible - mega-projects.

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Documentary