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2. Photo by The Cookiemonster - http://www.flickr.com/photos/43098473@N08/5499613339/

3. Photo by Margot Gabel - http://www.flickr.com/photos/-mrgt-/7550719774/

4. Photo by Xurxo MartÃ-nez - http://www.flickr.com/photos/seretuaccidente/4528522283/

5. Photo by i k o - http://www.flickr.com/photos/emiliano-iko/8100807562/

6. Photo by Luis Argerich - http://www.flickr.com/photos/lrargerich/3010519655/

8. Photo by Rantes Aguirre - http://www.flickr.com/photos/rantes/462315063/

9. Photo by Ryan Dickey - http://www.flickr.com/photos/meesterdickey/7768330090/

10. Photo by The Q - http://www.flickr.com/photos/theqspeaks/5612579199/

12. Photo by christopher charles - http://www.flickr.com/photos/neonman/6331933382/

13. Photo by Giovanni - http://www.flickr.com/photos/giovanni_novara1/4762867155/

14. Photo by m.f.photography - http://www.flickr.com/photos/m_f_photography/4185985784/

15. Photo by Garry Knight - http://www.flickr.com/photos/garryknight/2744586191/

16. Photo by Laurence Simon (Crap Mariner) - http://www.flickr.com/photos/isfullofcrap/2179997110/

18. Photo by DVIDSHUB - http://www.flickr.com/photos/dvids/4090925252/

19. Photo by Gayané Adourian - http://www.flickr.com/photos/gayaneh/8721210076/

20. Photo by Alexandre Ferreira - http://www.flickr.com/photos/amf/2071223678/

21. Photo by Francisco Gonzalez - http://www.flickr.com/photos/nyuudo/4187773101/

22. Photo by LEOL30 - http://www.flickr.com/photos/lwr/105509373/

23. Photo by tunnelarmr - http://www.flickr.com/photos/tunnelarmr/2293749224/

24. Photo by Belltown Messenger - http://www.flickr.com/photos/belltownmessenger/2336405624/

25. Photo by David Dawes - http://www.flickr.com/photos/virtualsound/8416709664/

26. Photo by ARC - The Alliance of Religions and Conservation - http://www.flickr.com/photos/53990852@N05/7886209830/

27. Photo by David Watts1978 - http://www.flickr.com/photos/davidwatts1978/3199405401/

28. Photo by Our Lady of Disgrace - http://www.flickr.com/photos/hmocopymonkey/2653462361/

30. Photo by nahlinse - http://www.flickr.com/photos/nahlinse/3879995561/

31. Photo by Juan Carlos Camargo - http://www.flickr.com/photos/jcc-arq/8092793219/

32. Photo by mike fabio - http://www.flickr.com/photos/revrev/6136686196/

33. Photo by TEDx SF - http://www.flickr.com/photos/tedxsf/5841084026/

34. Photo by Martha T - http://www.flickr.com/photos/roswellsgirl/4839382106/

35. Photo by Bibin C. Alex - http://www.flickr.com/photos/bibinca/2836138371/

36. Photo by Xurxo MartÃ-nez - http://www.flickr.com/photos/seretuaccidente/4528522283/