S04E05
7.0/ 10

Aachen Cathedral, Germany

Ancient Superstructures – Season 4

Aachen Cathedral is a 1,200-year engineering marvel. We decode the 'smart' mortar, the hidden iron ring stabilising the cupola, and the metal reinforcements that let stained glass replace stone.

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    Ancient Superstructures S04E05 – Aachen Cathedral, Germany | CinemaHub | CinemaHub