Trees are just some of the features drawn on the facade of the Wohngenossenschaft Soldaritaet coop apartment buildings as part of a 22,000-square-meter mural in Berlin, Germany, Aug 20, 2013. Artists from French-based Citecreation painted on the three buildings with imagery inspired by an adjacent zoo. Citecreation applied to the Guinness Book of World Records to have its mural be named the largest mural on a residential building in the world. The mural will be officially unveiled on Aug 22. [Photo/CFP]