2018-01-12T05:00:00Zs at 2018-01-12T05:00:00Z on Discovery
2021-03-06T05:00:00Z
42m
11h 37m(8 episodes)
United States
English
Documentary
From the Great Pyramid of Giza to the Statue of Liberty, experts investigate some of the world’s most extraordinary monuments. What engineering techniques were used to build these iconic megastructures, and what secrets do they conceal?
