A two-day journey along an African railway which connects Brazzaville, the capital of the Republic of the Congo, to the coast 310 miles away.

The 2,000 mile-long Adelaide-Darwin railway, commonly known as the Ghan Line.

The Konkan rail line runs down the west coast of India, connecting the port cities of Mumbai and Mangalore.

A railway trek in Southeast Asia, from Bangkok to Mandalay, Myanmar, covers nearly 2,000 miles and highlights extraordinary places rich in history and culture.

Crossing the Andes by train includes some of the highest and driest environments on the planet; hitching rides on unusual trains; altitude sickness.

A 2,000-mile adventure from Moscow into Arctic Siberia, Russia, on some of the toughest railway lines in the world.