Love the Tube and love abandoned things so this is just fantastic. Would love to take 6 months out and go and explore every old site. There's the bigger version here - ghost stations of the London Underground.
Anyone who knows me knows that I have a fascination of all things WW1/2, bunkers (and castles, but they're not really WW1/2) in particular. I lose myself completely when I'm in or around one, and sometimes, photos, such as these by Jonathan Andrews, are enough.
I really wanted to call this post 'Bonkers About Bunkers' but I managed to resist.
This abandoned cement factory was turned into the head office of Taller de Arquitectura, over a period of two years by Ricardo Bofill. Just incredible.
See more images here.