World's Most Extreme S1E6
Previous
World's Most Extreme
S01E06 — Tunnels
World's Most Extreme poster

World's Most Extreme

S01E06 Tunnels

2014-12-15

Spanning from the Swiss Alps to bustling cities in Japan, tunnels showcase remarkable feats of engineering, yet they can also become sites of tragedy. Here are ten of the most extreme tunnels found around the globe.

Season 1 Episodes

1
Roads
2014-09-02
 2
Bridges
2014-09-09
 3
Railways
2014-09-23
 4
Waterways
2014-12-01
 5
Airports
2014-12-08
 6
Tunnels
2014-12-15