Aired: Apr 13, 2003The construction of Sky City, a revolutionary skyscraper, is underway in Japa...

The next episode explores the remarkable Gotthard Base Tunnel, a 57-kilometer-long underwater passage in Switzerland that has revolutionized rail transportation in Europe.
Streaming in:
United States
You can only purchase/rent in United States, but you can stream in other regions.
Unlock the ability to watch Extreme Engineering in any region with NordVPN.
Additionally, viewers have the option to either rent or purchase "Extreme Engineering" on the following digital platforms: Amazon.
Seasons: 9
Network: Discovery
Production Country: United States
Genres:Documentary