London Tube

Do you come across to realize that London undergroup railway is the oldest underground system and one of the three largest in the world?

Do you know how many stations it has? How many passengers it serves daily? How wide its network covers?

Check here: http://en.wikipedia.org/wiki/London_Underground

Oh, have you ever been to here, www.tfl.gov.uk ? an amazingly useful website for travelling in London. That shows the advantages of internet, doesn't it?

Enjoy.