A visitor looks at a photo of a separation wall in Sadr City, Baghdad, Iraq as it hangs as part of the 'Wall on Wall' exhibition at the East Side Gallery section of the former Berlin Wall on July 10, 2013 in Berlin, Germany. A series of photos shot since 2006 by photographer Kai Wiedenhoefer hanging on the Western, river Spree side of the Wall features large pictures of separation barriers in Baghdad, Korea, Cyprus, Mexico, Morocco, Israel, Belfast, and in the former East Germany itself. (Photo by Adam Berry/Getty Images) ( 173221633 )