1. Nazi Gold Highway

Railroads constructed during turbulent periods and associated with mankind's ugliest deeds. Beginning with the Trans-Pyrenees Railway.

2. Dark Side of the Mountain

The Harz Mountain Railway in Germany - Europe's longest rail network - which still uses steam locomotives and has a hidden past.

3. Gold Rush

The White Pass and Yukon Railroad over the US-Canada border, which began construction after the Klondike Gold Rush in the 19th century.

5. The Liverpool to Manchester Line

The Liverpool and Manchester Railway, which revolutionised rail travel when it opened in 1830, including introducing the first signalling system.

6. Rainforest Railway

The background to the Tablelands Railway Line in Queensland, which changed the face of the state when it was constructed in the late 1800s.