There is an outstanding set of photos online of the Tower of London and how specifically it related to a lengthy and important battle scene in Neal Stephenson's "The System of the World:" the last book in his "Boroque Cycle." If you haven't read the series, you should, it is definatly one of my favorites and probably Stephenson's best (which is saying something, as the man is an outstanding author).
http://www.flickr.com/photos/notlikecalvin/sets/72057594068198516/
-Brandon
