- London Underground, a system of rail lines, is still growing through the present day with the latest line expected to carry an incredible 30,000 people per hour in each direction!
- First Aired: April 14, 2000 - 51 Minutes Runtime
Watch Super Structures of the World Season 1 Episode 6 - London Underground
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Also on Fireworks International
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Super Structures of the World, Season 1 Episode 6, is available to watch and stream on Fireworks International. You can also buy, rent Super Structures of the World on demand at Amazon Prime, Amazon online.