A picture taken on July 31, 2015 shows a terrace of one of the apartments inside the Bosco Verticale towers (Vertical Forest), builded by Hines as part of Residenze Porta Nuova area in Milan. The towers contain landscaping with more than 1,000 different species of trees, small bushes and flowering plants surrounding the terraces. AFP PHOTO / GIUSEPPE CACACE        (Photo credit should read GIUSEPPE CACACE/AFP via Getty Images)