Hidden in the hills of the western heights is a location that resembles he keep of dover castle, Courts folly on the western heights in Dover Kent.
links about courts folly:
http://www.panoramio.com/photo/29800809
http://doveruk.blogspot.co.uk/2011/09/front-view-of-courts-folly-dovers-lost.html
http://www.subterraneanhistory.co.uk/2009/10/courts-wine-vaults-dover.html
http://www.dover-kent.com