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Impossible Engineering

Mega City Railway

Season 3 Episode 5
Uncover what it took to build one of the most ambitious rail projects in history, London's Crossrail. This staggering feat will span over 73 miles and transport 200 million people a year around one of the world's largest and busiest cities.
  • 43 min
  • TV-PG
  • Premiered 04/27/2017