French artist JR unveils a monumental new optical illusion installation in Italy

Street artist JR, known for the larger-than-life photographic installations that took over Rio de Janerio during the 2016 Olympics, has now unveiled a towering optical illusion in Florence, Italy.Street artist JR, known for the larger-than-life photographic installations that took over Rio de Janerio during the 2016 Olympics, has now unveiled a towering optical illusion in Florence, Italy.