Watch Series: Ancient Megastructures Released in (2011) - Season 1 produced by USA, Fr, The TV Series categorized in Documentary, and content rating TV-G with duration 50 min broadcasted as these networks National Geographic, National Geographic (US), Streamed at Putlocker & directed by Mike Ibeji, Kelly McClughan, Melisa Akdogan. Examine how ancient civilisations built some of the most magnificent structures on the face of the Earth, many centuries before the industrial revolution. - Season 1