Summary
Incredible feats of human endeavour, revealing what people have built, where they've built it, how and why.
Underground Worlds
- Season 1
- 10 episodes
- Documentary
Episode 3: Switzerland
Summary
A look at some of Switzerland's 300,000 subterranean bunkers, built across history. Plus, the extraordinary creation of a Liverpool entrepreneur that's shrouded in mystery, and a network of man-made tunnels used by adventurous subterranean thrill-seekers deep beneath Slovenia's landscape.
How to watch
Streaming
Details
- Formats
- Colour
