The Origins Of The London Underground

London has the oldest underground railway in the world! 
Londoners call it the "tube"!

It was the dawn of 1863, and London's not-yet-opened subway system — the first of its kind in the world — had the city in an uproar. 

Most people thought the project, which cost more than 100 million dollars in today's money, would never work. So how did they do it? 

Christian Wolmar explains how the London Underground was built at a time when no one had built a railway under a city before.

A very interesting lesson by TEDEd.

Further down you can find a tube map to see how much it has evolved!