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Season 9 Episode
- Season 3 Berlin Wall
- Season 3 Impossible Bridges: Denmark to Sweden
- Season 3 Impossible Bridges: Greece
- Season 3 Hoover Dam
- Season 3 Inside NCIS
- Season 3 Garbage Mountain
- Season 3 Ice Hotel
- Season 3 Supertanker
- Season 3 Machines of War: Missiles
- Season 3 Science of Steel
- Season 3 Episode 11
- Season 3 Machines of War: Guns
- Season 3 Panama Canal Unlocked
- Season 3 Science of Bricks
- Season 3 Science of Concrete
- Season 3 Megafactories Ferrari
- Season 3 Impossible Bridges:China
- Season 3 Ultimate Structures: Super Rigs
- Season 3 Rockeaters of Iceland
MegaStructures - Season 3 Episode 4 Hoover Dam
7.00 60 minutes Explore the US Treasury's impenetrable subterranean vaults housing monster money-making machines that churn out billions of dollars. See the army of protectors that ensure the world's most powerful economy with the mantra: "In God We Trust". Discover the elaborate systems of design and protection at the US Treasury premier currency manufacturer and her sister operation, the Bureau of Engraving and Printing.
