Nearly 6,000km (over 3,500 mi) of windswept plateau, taiga forest, and vast, untouched wilderness separates Beijing from Moscow. Most people choose to fly over it. As a result, most people miss out on one of the world’s last untamed frontiers. North Asia is home to a dizzying variety of cultures, languages, and remote communities, many of which can only be reached by train. This is the land of the legendary long-haul route – the Silk Road, the Trans-Manchurian, the Trans-Mongolian, and the Trans-Siberian, the longest haul of them all. For centuries, these routes have been changing the world. Now it’s time for them to change yours.