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