I could post touristy photos of London. But I'm not going to do that. As I don't live in central London. I live in North London, in a town called, East Finchley.
East Finchley tube station.
Outside east Finchley tube station. I know its an old photo, but it hasn't changed at all.
The northern line tube map. I live on the northern line.
There are 11 underground lines (Excluding DLR and Over ground services)
Bakerloo, Central, Circle, District, East London, Hammersmith & City, Metropolitan, Northern, Piccadilly, Victoria, Waterloo & City.
Yeah it's huge!