A road of mountain passes and access to The Himalayas.

Bangladesh is the land with the highest density of population in the world, and the daily struggle to survive is fought everywhere, including the streets.

The Adriatic Highway is a coastal road built in the 1950s and 60s at the time of Yugoslavian President Tito.

It is a road of mountain passes and India's access to the roof of the world - The Himalayas. This 475-kilometre long route connects the cities of Manali and Leh.

In Siberia, the icy roads are covered with snow for months at a time. In other parts of the world this would be cause for concern, but in Siberia it is completely normal.

A fascinating journey through the climate zones of South America, from the tropical rainforests to the high mountains of the Andes.