It was 1863 and London, for the first time, saw what would revolutionize public transport in cities around the world. On January 10, the first metro line was born.
The first line of the famous "Tube" subway of the English capital was Circle, followed 5 years later by District, between South Kensington and Westminster.
Today it counts 270 stations that cover more or less 400 kilometers, making it one of the largest subways in the world.

How the London Underground was built
The need underlying such an important and not at all easy to build infrastructure was, in essence, a practical one – London's streets had become impassable to traffic and the only solution seemed to be to divert part of it underground.
English engineers decided to experiment with a new construction method for it.
Unlike the "cut and cover" tested before, which predicted the destruction of roads and the interruption of water and light lines, the method that we still know today as "the shield" was perfected.
Developed around 1825 by Sir Marc Brunel and his son Isamabard, to dig the first tunnel to pass under the Thames Gallery, it was inspired by mining. The result was a somewhat narrow circular tube, but wide enough for a train to pass through. This is how the nickname "The Tube" was born.

The famous map
In addition to being a refined example of engineering, the London Underground has also entered design history with its map, which has become a true symbol of the city in the world.
Designed by Harry Beck in the 1930s, it later inspired the subways of New York and Tokyo.
Basically it's a pretty simple rationale: Beck decided to stylize the route of the lines, using only vertical, horizontal and diagonal paths, to help passengers find their way around easily.
Despite the geographical inaccuracy (according to Beck, people would never again be interested in the faithfully recreated route) success was guaranteed.

Many children were born in the Tube
During the Second World War, work on the extension of the subway was interrupted, but the underground tunnels became useful as an air raid shelter.
The famous TV presenter, Jerry Springer, is one of the many children born right in the London Tube on February 13, 1944.
In fact, his family took shelter from Luftwaffe bombing and his mother had no choice but to give birth to him underground.
* London Underground – The London Underground (also known simply as the Underground, or by the nickname Tube) is a rapid transport system serving Greater London and parts of the nearby counties of Buckinghamshire, Essex and Hertfordshire in England .
/ Corriere della Sera