Building on the global success of Impossible Engineering, this unique new science and history series showcases some of the world's most extraordinary engineering achievements of the railways. Since their meteoric rise in the 19th Century, railways have been at the forefront of modern engineering and transport. They have conquered dizzying altitudes, wilderness, seas and cities. With amazing access and using a trademark combination of exciting graphics, stunning footage and expert analysis, the series captures the design breakthroughs and heralds the pioneers who have embraced nature and physical challenges, to create a truly remarkable global railway network.