Architectural Outdoor Photography
London Underground photography
The London Underground, known as "the Tube", is a rail network in London, United Kingdom, which serves most of Greater London and parts of Essex, Buckinghamshire and Hertfordshire. The original section of the subway is the oldest in the history of urban railways, as it began operating on January 10, 1863. It is the fourth largest subway in the world, behind Seoul, Shanghai and Beijing, carrying a total of 1.107 billion passengers. annually.