Contributed by Florian Hardwig
Contributed by Stephen Coles
Photo(s) by Andreas Maxbauer on Flickr.
Contributed by Stephan Peters
Photo(s) by Bart Solenthaler on Flickr.
Photo(s) by cardboardamerica@gmail.com Jordan Smith on Flickr.
Contributed by Jan Middendorp
Contributed by Felix Nic
Contributed by Robert Beatty