How Did They Build That? · SEASON 5

Tunnels & Towers

Episode 4 · 2026-08-17

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How Did They Build That? poster
Season 5Episode 4★ N/A/10
  • Documentary

Episode overview

In Chicago, twin concrete towers push the limits of high-rise design. Engineers conquer the sea to unite Sweden and Denmark. And in Sydney, Norman Foster and team take on the challenge of a new metro station that can't disrupt the busy streets above.

44 minutes

Season 5 episodes

1. Reborn Buildings & Sacred Grounds2026-07-27 2. Earthquakes & Exoskeletons2026-08-03 3. Cable Cars & Rooftop Parks2026-08-10 4. Tunnels & Towers2026-08-17 5. Canals & Curves2026-08-24 6. Twists & Turns2026-08-31 7. Summits & Spires2026-09-14 8. Wings & Waterlines2026-09-21 9. Space Homes & Glass Waves2026-09-28 10. Sculptures & Skyscrapers2026-10-05