W2TCH

How Did They Build That? (2021 – ...)

2021 • 4 seasons • Documentary
On September 29, 2026
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Season 4

How Did They Build That? · S4E3 — Speedcore & Steambend

Aug 10, 2025 · 45 min

Synopsis

A library, spanning the railway tracks, seems to drift among the clouds. A high-speed skyscraper rises, constructed with unprecedented swiftness. And a bridge, a world's first, takes form, its design sparked by the imagination of a child.