When you see the Tower of London - on a walk along the Thames opposite, or maybe over Tower Bridge, you still gawp in disbelief.  It's in the centre of a huge bustling city and there it is, forcing you to stop and think about the history of this place.  Of the people who've been locked up, or brought there in by boat along the river.  The ravens, the beefeaters and the jewels too!  It's simply stunning and we are lucky to have it.