The London Underground is the oldest and longest underground railway system of any capital.
The Tube has very much played a part in the development of the city in many ways. It heralded and necessitated many remarkable developments in engineering as well as carving a niche for itself in the world of design. Popular culture has featured it in countless and varied forms over its history and it has been the inspiration for many films, songs, poems and stories.
The statistics make compulsive reading with surprising information on length, depths and speed as well as unusual facts regarding everything from babies born on the trains to the very oddest lost property you could think of.