Nova: Building the Great Cathedrals

How did medieval engineers construct magnificent skyscrapers of glass and stone?

Documentary

Jay O. Sanders

(Self - Narrator)

Joan R. Branham

(Self)

Frank Helmholz

(Self)

Stefaan Van Liefferinge

(Self)

Thibaut Desjardins

(Self)

Jacqueline Jung

(Self)

Andrew Tallon

(Self)