Contributed by Noah Bromberg
Photo(s) by Bart Solenthaler on Flickr.
Contributed by Matthijs Sluiter
Photo(s) by Michael Studt on Flickr.
Photo(s) by Klaus Hiltscher on Flickr.
Photo(s) by Alan Mays on Flickr.
Contributed by Florian Hardwig
Contributed by Mike Blystone
Contributed by Stephen Coles
Contributed by Humberto Gillan
Contributed by James Edmondson
Photo(s) by Kunst am Bau / DDR on Flickr.