It just doesn't seem possible that the gear shapes that make up the outline of this sculpted heart shape can rotate freely -- but they do! And smoothly at that. It takes a few revolutions of the handle before the pieces of the moving, fragmented heart gently reassemble. A wonderful metaphor for the the breaking and healing of hearts, but I have no idea if that was the artist's intention.
This is one of the most amazing pieces I have seen, both for its artistry and the technical accomplishment.
[ Thanks Martin! ]