Rising to 322 feet (98 m) at its highest point, Parliament Hill is a much-loved viewpoint for Central London. It's named for the view it would have once given towards the Houses of Parliament, though modern development has since masked much of this view. Interestingly, the story goes that, in 1605, Guy Fawkes and Robert Catesby planned to watch the foiled destruction of Parliament from this spot. Remember, remember, the 5th of November...