Across ice, oceans, and wilderness, railways defy the planet's harshest terrain.
Explore extraordinary rail lines built through alpine snow, unstable mountains, African savanna, and the Indian Ocean. This series reveals the engineering, history, and daily risks behind routes shaped by bridges, tunnels, landslides, storms, and extreme weather. Sign up to see how trains still connect communities across some of the world's most unforgiving landscapes.
Episode guide
3 episodesLove World's Most Dangerous Railway Lines? It’s just the start.
Join now to unlock the whole library — thousands of award-winning documentaries beyond World's Most Dangerous Railway Lines, from the deep ocean to deep space.
Trending Now
- New shows weeklyFresh documentaries land every week.
- Exclusive originalsAward-winning films you can’t stream anywhere else.
- Watch anywherePhone, tablet, web and TV — pick up where you left off.
- No commitmentNo contract. Cancel in a click.
Pick the plan that’s right for you.
Flexible plans, no contracts.
Thousands of documentaries across nature, history, space, and science.
- Watch in 4K on all your devices
- Download and watch offline
- Stream ad-free — cancel anytime
Thousands of documentaries across nature, history, space, and science.
- Up to 4K
- Offline downloads
- Ad-free
Frequently asked questions
Thousands of the world's best documentaries and factual programming — nature, history, science, technology, and biography — including exclusive Curiosity Originals like World's Most Dangerous Railway Lines. Stream it all ad-free, anytime.
World's Most Dangerous Railway Lines streams with every plan. Plans start at $4.17/month.
Watch on the web, iOS and Android, Roku, Apple TV, Amazon Fire TV, Chromecast, Android TV, and most smart TVs. Start on one device and pick up right where you left off on another.
Curiosity Stream is our streaming service — thousands of documentaries and originals. The Smart Bundle is Curiosity Stream plus four other independent streaming services (Tastemade, Kidstream, Curiosity University, and SOMM TV) on a single subscription.