Total track length402,000 m
7.6 quadrillionBohr radii
188,732Christmas trees
402 quintillionthsMilky Way diameters
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The world's first underground railway, spanning 402 kilometers/Infrastructure
The London Underground, affectionately known as 'the Tube,' is the world's first underground railway, having opened its first section on January 10, 1863, between Paddington and Farringdon. Today the system consists of 11 lines serving 272 stations across 402 kilometers of track, of which 45% actually runs underground. It carries approximately 5 million passenger journeys daily. The deepest station is Hampstead at 58.5 meters below street level. The iconic Tube map, designed by Harry Beck in 1931, revolutionized transit cartography worldwide.
Opened 1863
33 km/h average including stops