Sitio dedicado a revelar como los antiguos arquitectos e ingenieros construían un obelisco, unos baños, un acueducto o poderosas armas de destrucción:
In the series, NOVA crews attempt to ferret out long-forgotten secrets of early architects and engineers. How did they design and erect the medieval war machines known as trebuchets? Egyptian obelisks? The Easter Island stone monoliths called moais? Roman baths? The rainbow bridges of ancient China?: Secrets of Lost Empires.