Building the longest underwater pipeline is no mean feat, but these engineers pulled it off. Take an exclusive look under the ocean and discover the trials and tribulations of the Langeled pipeline. Before the completion of the Nord Stream pipeline, it was the longest subsea pipeline in the world.

It's construction like you've never seen it before! Building the Biggest is an innovative six-part series capturing the most ambitious building projects shaping our world today. From pipelines and diamond mines to the International Space Station and the Singapore subway system, you meet with the masters of construction who make the seemingly impossible a practical reality.

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