If you live in London then you probably use it every day. But how much do you know the network that ferries millions of people around the capital?
Here are 21 facts about London Tube stations: is your local station on this list?
1. At Oval station there is one special Underground roundel in the shape of an oval (instead of being round like all the others).
2. Balham is the only Underground station that doesn’t have any of the letters of the word ‘underground’ in it.
3. On the columns at Temple station, there are small temple-shaped emblems at the bases. Coincidence?