The London underground is the oldest in the world, that's why is so famous. When other big cities had not thought about building undergrounds, the tube was already working in London.
London is a big city so people need public transport to move around the city, go to work, study or simply go shopping.
Live music, people, steep stairs, mazes... are some of the things that you can find in the London underground.
It's an experience that some people like and others hate... What do you think?