Have you ever noticed if you look out of the window on the Piccadilly Line while travelling between Green Park and Hyde Park Corner that the tunnel wall changes briefly from the normal soot-covered lining to beige brickwork and then back again? Behind the bricks is the disused Down Street station, used by Churchill and his War Cabinet as an emergency bunker before the Cabinet War Rooms were completed.

Today I feel mostly like crap. Geek Underground trivia and the O.C. are my way of getting through it.