The London underground, also called Tube, is a more convenient, fast
and direct form of travel. The subway opened in the late 19th century, in 1884. Now there are more than 270 stations. You can recognize metro stations by red and blue signs on the streets. There is no fixed fare because it depends on the distance of the trip. You can buy a ticket or a token from the clerk at the box office or at the vending machine. There are 8 different subway lines in London. Travellers who do not know the metro should consult the map.