I stumbled upon a couple of interesting sites this morning while perusing the internet.
Flak Towers (http://www.kuriositas.com/2012/04/flak-towers-legacy-of-luftwaffe.html)
Lower than a Snake's Belly in a Wagon Rut (http://www.vintagewings.ca/VintageNews/Stories/tabid/116/articleType/ArticleView/articleId/325/language/en-CA/Lower-than-a-Snakes-Belly-in-a-Wagon-Rut.aspx)
Nice. I'd seen the second one before. Lots of amazing pics.
I came across this one the other day through Subsim.com
http://covertshores.blogspot.com/
Some awesome pictures there. When I have time I'll have to spend some more time there.