The railway system of Buckinghamshire has a long and complex history dating back to the 1830s with the opening of sections of today's West Coast Main Line and Great Western Main Line. The development of Buckinghamshire's railway network was largely due to its position nationally as many long-distance routes chose to go through Buckinghamshire, especially between Britains two largest cities, London and Birmingham. The county had its own pulling power in addition, as produce such as the Aylesbury Duck could then be easily transported to the capital.