
Impossible Engineering - Season 4: Extreme Railroads
Since their spectacular rise in the 19th century, railroads have been at the cutting edge of engineering and technology and that remains true, even today. Extreme Railroads shines a light on the world's most extraordinary rail systems, including New York's Arthur Kill Vertical Lift Bridge, Japan's Bullet Train and California's Central Pacific Railroad.
Episodes

Episode 1
Deadliest Trains
The world's toughest trains have conquered deadly jungles, deserts, and mountains, and were made possible by expert engineering and cutting-edge technology.

Episode 2
World's Fastest Trains
The world's fastest trains were built with expert engineering and cutting-edge technology, pushing the speed of railroad travel to new limits.

Episode 3
Mega City Trains
The world's busiest cities are kept running by innovative train systems built with expert engineering and cutting-edge technology.

Episode 4
Trains of the Abyss
The world's most incredible trains cross deadly canyons and chasms of terrifying heights, and were made possible by expert engineering and cutting-edge technology.

Episode 5
Monster Mountain Trains
The world's toughest trains have conquered the deadly heights of our tallest mountains, and were made possible by cutting-edge railroads engineered to make impossible climbs and brave extreme weather.

Episode 6
Trains of Deadly Seas
The world's most incredible trains have conquered dangerous oceans and seas, and were made possible by expert engineering and cutting-edge technology.