Military Strongholds: Megastructures of Genius (2021) is a Documentary film that follows in the heart of central Europe are some of the world’s most impenetrable military strongholds. In France, 160 megastructure fortresses still line the country’s borders 3 centuries after they were constructed. As solid as ever, how did they withstand attack after attack? Was the secret in their materials? Their shape? In fact, the strength and resilience of these megastructures is due to the genius of one man: Sébastien le Prestre de Vauban. Military Strongholds: Megastructures of Genius is not currently listed with streaming providers in your selected region, but availability can change over time. It has a user rating of 10.0 out of 10 from 2 votes. Fans of documentary movies may also want to explore similar titles below.