Ancient Superstructures

Season 4 Episode 5: Aachen Cathedral, Germany

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.

Genre:

Documentary

Seasons:

4

Episodes:

20

Actor:

Quality:

HD

Status:

Returning Series

First Air:

2020

IMDb:

8.0