Did you know that during WWII, many Londoners used the Underground stations as bomb shelters during air raids? The BBC is airing a special on one particular incident involving the London Underground, one that has gone down as the worst civilian tragedy of the war. There is a brief history of the Underground as a bomb shelter on this page and a synopsis of the terrible event, but there's no way to watch the special online. :(
To me, it's still so amazing to look back and think about what everyday life would be like during the time of a real war. It's something that most Americans have been lucky to never experience here in the States. Hopefully we'll never have stories like these to tell for ourselves.