Whether you love or loathe the Underground, as a Londoner you probably spend plenty of time riding the tube. But have you managed to remember what any of it looks like in the process?
Try and guess the correct station for each of these 20 photos and see how you fare...
1) Okay, here we go! Which station is this?
[Photo: Simon Hadleigh-Sparks]
2) How about this one?
[Photo: Nicola Ferrara]
3) Seems familiar. But where is it?
[Photo: Aaron Yeoman]
4) This platform's pretty arty - where is it found?
[Photo: David Borunsky]
5) Disaster - this station's roundel seems to have lost its text! Do you recognise it anyway?
[Photo: Matt Buck]
6) Time for an easy one. Well, easier.
[Photo: Theunis Viljoen LRPS]
7) It's gloomy down here. Where the hell are we?
[Photo: Nick Richards]
8) This could pretty much be anywhere, so you're just going to have follow your instincts. Sorry.
[Photo: Sean Batten]
9) So shiny! So clean! Well done that cleaning crew. But where, pray, do these escalators escalate?
[Photo: Sean Batten]
10) Perhaps you've trudged this long tunnel before...
[Photo: Umbreen Hafeez, Real London Photos]
11) Whoa - we're halfway there! Whoa-oh, this photo's taken where-air?
[Photo: Rob Greig]
12) Famous design. Obscure location. Let's play... NAME THAT TUBE STATION!
[Photo: The Great Misto]
13) Let's take things down south...
[Photo: The Great Misto]
14) ...and now back somewhere central. There's a flying saucer shape to this ticket hall.
[Photo: Doug / Ingenious Images]
15) This feels familiar. So familiar. It can only be...
[Photo: Umbreen Hafeez, Real London Photos]
16) Sexy uplighting. A quality roundel sign. Phwoar.
[Photo: R/DV/RS]
17) There's a clue at the end of the tunnel...
[Photo: Simon Hadleigh-Sparks]
18) Let's take a jaunt to the North.
[Photo: Jon Herbert]
19) And deep underground.
[Photo: Andreas Grieger]
20) Last one! Where's this?
[Photo: Aidan CK]
The correct answers were: Embankment, Green Park, Waterloo, Gloucester Road, Mile End, Canary Wharf, Baker Street, Holborn, King's Cross St. Pancras, Bank, Tottenham Court Road, Gants Hill, Clapham Common, Knightsbridge, Piccadilly Circus, Swiss Cottage, Southwark, Turnpike Lane, Westminster and Hyde Park Corner.