Left a bit, Cap'n.

I've talked before about Lichfield Cathedral whose main claim to fame is that it is the only Medieval cathedral built with three spires.  What I hadn't realised until recently is that because of this particular configuration, German pilots during the war used the cathedral as a navigation aid, and so as a result it and its immediate surroundings stayed safe from bombing.  Another navigation aid closer to where I lived was a reservoir now called Chasewater, but then known as Norton Pool. Stretches of water were useful to navigators back then because they were easier to see in the blackout - particularly if there was a moon. So enemy bombers used to congregate over Chasewater, and then fly on to their targets.   Which meant that, even though my nearby village had little strategic value, we had to put up with a lot of air traffic on its way to and from Birmingham and the surrounding industrial areas.