London Underground

The London Underground is a metro system serving a large part of Greater London and neighbouring areas of Essex, Hertfordshire and Buckinghamshire in the UK. It is the world's oldest underground railway. It was also the first underground railway to operate electric trains. It is usually referred to as the... Read More

The London Underground is a metro system serving a large part of Greater London and neighbouring areas of Essex, Hertfordshire and Buckinghamshire in the UK. It is the world's oldest underground railway. It was also the first underground railway to operate electric trains. It is usually referred to as the Underground or the Tube—the latter deriving from the shape of the system's deep-bore tunnels—although about 55% of the network is above ground. See Less