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Is How Did They Build That? coming back?

How Did They Build That? (2021–present) on Smithsonian Channel

The answer: Between seasons — last episode October 5, 2025, no return date announced yet.
How Did They Build That? poster
Network / streamer
Smithsonian Channel
Premiered
January 3, 2021
Runtime
~60 min per episode
4seasons
38episodes

About How Did They Build That?

How Did They Build That? is currently between seasons. The show last aired its most recent episode on October 5, 2025, and there is no confirmed return date.

This series, which premiered on January 3, 2021, explores the world of extraordinary architecture and engineering. It examines how some of the most ambitious structures around the globe were constructed, from towering skyscrapers to innovative bridges and lifts. The show delves into the design secrets and incredible stories behind these feats of engineering, aiming to answer the question: How Did They Build That?

The program is a documentary series that began in 2021 and has aired four seasons so far. It features the narration of Scott Rummell and has a runtime of 60 minutes per episode. The series showcases the creativity and technical skill involved in building structures that often seem to defy gravity and logic.

How Did They Build That? episode schedule

38 aired

Aired · 38

DateEp.Title
October 5, 2025 S4·E10 Floating Parks & Upcycled Towers
September 28, 2025 S4·E9 Super Stadiums & Extraordinary Elevators
September 21, 2025 S4·E8 Facelifts & Scaffolds
September 14, 2025 S4·E7 Summit & Submerge
September 7, 2025 S4·E6 Shipyards & Slender Builds
August 24, 2025 S4·E5 Ecobuilds & Earthquakes
August 17, 2025 S4·E4 High Waters & Harsh Winds
August 10, 2025 S4·E3 Speedcore & Steambend
August 3, 2025 S4·E2 Medals & Marinas
July 27, 2025 S4·E1 Space Stations & Super Inventions
October 20, 2024 S3·E10 Boxes & Birds
October 13, 2024 S3·E9 Curved & Cables
October 6, 2024 S3·E8 Subways & Sightlines
September 29, 2024 S3·E7 Floating & Lifting
September 22, 2024 S3·E6 Tricks & Trains
September 15, 2024 S3·E5 Heights & Balance
September 8, 2024 S3·E4 Parking & Sparkling
September 1, 2024 S3·E3 Canyons & Curves
August 25, 2024 S3·E2 Jungles & Bricks
August 18, 2024 S3·E1 Fantastic & Futuristic
September 4, 2022 S2·E10 Radical & Resplendant
September 4, 2022 S2·E9 Mirrors & Marble
August 28, 2022 S2·E8 Breakthroughs & Bridges
August 21, 2022 S2·E7 Steep & Stunning
August 14, 2022 S2·E6 Upside Down & Under Sea
August 7, 2022 S2·E5 Skywalks & Suspensions
July 31, 2022 S2·E4 Elevated & Elegant
July 24, 2022 S2·E3 Retrofits & Airport Glitz
July 17, 2022 S2·E2 Swamps & Swagger
July 10, 2022 S2·E1 Riverparks & Artworks
Show 8 earlier episodes
February 28, 2021 S1·E8 Arctic Modules & Auditoria
February 21, 2021 S1·E7 Sky Gardens & Seismic Stations
February 14, 2021 S1·E6 Arches & Opera Houses
January 31, 2021 S1·E5 Supertalls & Firehouses
January 24, 2021 S1·E4 Viaducts & Hotels
January 17, 2021 S1·E3 Biomes & Rebuilds
January 10, 2021 S1·E2 Towers & Roofs
January 3, 2021 S1·E1 Cantilevers & Lifts

How Did They Build That? cast