Some of the world's most extraordinary train journeys are followed from the air and on the ground, taking in spectacular scenery and exceptional engineering.

Following railroads across interesting scenery through the lens of aerial photography and with a focus on engineering challenges. The Winnipeg-Churchill train crosses the difficult landscape of Manitoba.

The engineers of the Chepe Express manage to keep the train safe as it winds through the stunningly rugged terrain of Mexico's Copper Canyon.

Connecting the plains of New Jalpaiguri to the foothills of the Himalayas, the Darjeeling Himalayan Railway runs through dizzying loops and zigzags to conquer the world's tallest mountain range.

Some of the world's most extraordinary train journeys are followed from the air and on the ground, taking in spectacular scenery and exceptional engineering.

The Bergen line is a triumph of engineering in the face of extraordinary natural obstacles: fjords, freezing conditions and rogue wildlife.