How Did They Build That?Season 42025 · 10 episodesEpisodes1Space Stations & Super InventionsLives are on the line creating the International Space Station, a scientific marvel a decade in the making, that changes the way we look at the world.2Medals & MarinasA floating museum honors military heroes in Texas. A sky-park casino balances on six towers. And an office is carved out to protect NYC's High Line.3Speedcore & SteambendA 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.4High Waters & Harsh WindsApartments hanging 164 feet above the water defy gravity in Amsterdam. A trio of towers shimmer on Chicago's skyline, and museum design is revolutionized in Paris.5Ecobuilds & EarthquakesAn airport gets a 9 acre roof without stopping flights. A museum is buried in the desert to keep it cool. And building San Fran's most hated tower.6Shipyards & Slender BuildsA 284ft timber tower tests fire safety limits. An old crane tracks is reborn as sleek glass offices. And 28 apartments are stacked on a 21ft plot.7Summit & SubmergeA mountain-top centre defies extreme altitude. A stunning museum is sunk into an old dock. And a 600ft tower with floating gardens rises in Singapore.8Facelifts & ScaffoldsA museum bends 1,100 glass tubes into a bold facade. A vast atrium rises where the Berlin Wall fell, and a NJ bridge is raised 65ft for huge tankers.9Super Stadiums & Extraordinary ElevatorsA 70,000 seat stadium defies seismic forces in LA. Malta's 33 story tower twists around old vaults. And an 807ft elevator test tower spirals skywards.10Floating Parks & Upcycled TowersSan Francisco's MOMA dramatically triples in size. A skyscraper transforms by smart demolition. And 5 acres of parkland floats above Dallas traffic.Season 1Season 2Season 3Season 5