From record-breaking bridges and skyscrapers to innovative airports and the world’s most ambitious railway, this landmark series returns to reveal the extraordinary inventions that enable engineers to build these remarkable superstructures, along with the inner secrets of how they work. Each episode charts the construction of one epic project from start to finish, with a mix of immersive CGI animation, character-driven actuality, and bodycam, drone and time-lapse footage helping to break down the construction and transform our understanding of these incredible engineering wonders.