French graffiti artist JR at work in Berlin French graffiti artist and self-coined "photograffeur" JR, known only by his initials, is currently working on a number of murals in the German capital as part of his "Wrinkles of the City" project. His new work includes portraits of elderly individuals who have over time witnessed and experienced the upheaval and transformation of the city of Berlin, after Cartagena, Shanghai and Cuba. Images