Artist Peter Fischli poses next to 'Rock on Top of Another Rock', in Hyde Park on March 8, 2013 in London, England. The piece, commissioned by the Serpentine Gallery, was created by the artistic duo Fischli/Weiss, and was one of the last works they jointly conceived before David Weiss's death last year.
{"Image ImageDescription": "LONDON, ENGLAND - MARCH 08:  Artist Peter Fischli poses next to \"Rock on Top of Another Rock\", in Hyde Park on March 8, 2013 in London, England. The piece, commissioned by the Serpentine Gallery, was created by the artistic duo Fischli/Weiss, and was one of the last works they jointly conceived before David Weiss's death last year.  (Photo by Matthew Lloyd/Getty Images)", "Image Copyright": "2013 Getty Images"}