How Did They Build That? 4 seasons · 2021 · Ongoing ★★★★★4.0 Documentary An exploration of how some of the world's biggest man-made structures were built. EpisodesSeason 1Season 2Season 3Season 4 S01 · E01 Cantilevers & LiftsJanuary 3, 2021 S01 · E02 Towers & RoofsJanuary 10, 2021 S01 · E03 Biomes & RebuildsJanuary 17, 2021 S01 · E04 Viaducts & HotelsJanuary 24, 2021 S01 · E05 Supertalls & FirehousesJanuary 31, 2021 S01 · E06 Arches & Opera HousesFebruary 14, 2021 S01 · E07 Sky Gardens & Seismic StationsFebruary 21, 2021 S01 · E08 Arctic Modules & AuditoriaFebruary 28, 2021Cast Jay EllisSelf - Host ← All series