"Castles." Wikipedia. Wikipeda. Web. <http://en.wikipedia.org/wiki/Castles>.
http://steventill.com/wp-content/uploads/2009/01/kent_dover_castle.jpg
http://www.sword-buyers-guide.com/images/Witham1.jpg
http://www.geograph.ie/photo/1392794
<a href='http://www.pictures-of-castles.co.uk'>Castle picture(s) © www.pictures-of-castles.co.uk / Marijn Kampf</a>
http://www.flickr.com/photos/smb_flickr/362http://www.offrench.net/photos/gallery-8_photo-813.php975621/
http://maps.google.com/maps?t=k&hl=en&q=51.002913,0.544317
http://farm3.static.flickr.com/2251/2459630983_034a2732d2.jpg
http://steventill.com/wp-content/uploads/2009/01/kent_dover_castle.jpg
http://www.sword-buyers-guide.com/images/Witham1.jpg
http://www.geograph.ie/photo/1392794
<a href='http://www.pictures-of-castles.co.uk'>Castle picture(s) © www.pictures-of-castles.co.uk / Marijn Kampf</a>
http://www.flickr.com/photos/smb_flickr/362http://www.offrench.net/photos/gallery-8_photo-813.php975621/
http://maps.google.com/maps?t=k&hl=en&q=51.002913,0.544317
http://farm3.static.flickr.com/2251/2459630983_034a2732d2.jpg