Мегаструктури

MegaStructures: Tune into our series that takes an eye-popping look at the greatest buildings and machines ever created. Get inside these superstructures and uncover the cogs, gears, bells, and whistles that make them work. And learn about all the stops and starts that went into creating these engineering triumphs.

Web site: http://channel.nationalgeographic.com/channel/megastructures/

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