A favourite part of the London Underground

Perhaps you've got to be a bit of a London Underground enthusiast (or perhaps just a railway enthusiast in general) to appreciate this but my favourite part of the London Underground system is the Piccadilly Circus Bakerloo Crossover (at the northern end of the Bakerloo Line platforms). I can still remember the first time I saw it from the carriage of a Bakerloo Line train when I was about 13 years old. It's as fascinating now as it was then. Here are a couple of pictures from different angles and quite different dates.