![Peter Fischli stands in front of his giant boulder sculpture by him and David Weiss (1946-2012) , "Rock On Top Of Another Rock", unveiled in Kensington Gardens in London Stock Photo - Alamy Peter Fischli stands in front of his giant boulder sculpture by him and David Weiss (1946-2012) , "Rock On Top Of Another Rock", unveiled in Kensington Gardens in London Stock Photo - Alamy](https://c8.alamy.com/comp/2H6EEJ2/peter-fischli-stands-in-front-of-his-giant-boulder-sculpture-by-him-and-david-weiss-1946-2012-rock-on-top-of-another-rock-unveiled-in-kensington-gardens-in-london-2H6EEJ2.jpg)
Peter Fischli stands in front of his giant boulder sculpture by him and David Weiss (1946-2012) , "Rock On Top Of Another Rock", unveiled in Kensington Gardens in London Stock Photo - Alamy
![Let's hope they don't topple! Artist insists new boulder sculpture is perfectly safe (although it looks anything but!) | Daily Mail Online Let's hope they don't topple! Artist insists new boulder sculpture is perfectly safe (although it looks anything but!) | Daily Mail Online](https://i.dailymail.co.uk/i/pix/2013/03/08/article-2290354-18845564000005DC-884_634x463.jpg)
Let's hope they don't topple! Artist insists new boulder sculpture is perfectly safe (although it looks anything but!) | Daily Mail Online
![Let's hope they don't topple! Artist insists new boulder sculpture is perfectly safe (although it looks anything but!) | Daily Mail Online Let's hope they don't topple! Artist insists new boulder sculpture is perfectly safe (although it looks anything but!) | Daily Mail Online](https://i.dailymail.co.uk/i/pix/2013/03/08/article-2290354-18843CF2000005DC-828_634x459.jpg)