Megastructures reveals the drama, the human interest and the breath-taking technological innovation behind the world's most impressive constructions and machines.
They're miracles of modern engineering: built to last, built to excel. Massive structures that changed the face of the world. And each has a story to tell.
Megastructures premieres on Thursday (13 November) at 9:00pm (SIN/HK) on the National Geographic Channel.