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Poster How Did They Build That? Season 4 Speedcore & Steambend 2025

How Did They Build That? Season 4 Speedcore & Steambend 2025

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8/10 by 2 users

A railway-spanning library mimics the clouds. A speed-core skyscraper is built in record time. And a world first bridge inspired by a child's toy.

  • Released: 2025-08-10
  • Runtime: 43 minutes
  • Genre: Documentary
  • Stars: Jay Ellis
  • Director:
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