How did medieval engineers construct magnificent skyscrapers of glass and stone?
Genre: Documentary
Stars: Jay O. Sanders, Joan R. Branham, Frank Helmholz, Stefaan Van Liefferinge, Thibaut Desjardins, Jacqueline Jung
Crew: Gary Glassman (Director), Christine Le Goff (Director), Scott Tiffany (Director), Gary Glassman (Writer), Christine Le Goff (Writer)
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Studio: Providence Pictures, Telfrance
Runtime: 54 minutes
Quality: HD
Released: Oct 19, 2010
IMDb: 10
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