Designed for the southern façade of the fattoria building, the sundial marks the passage of time from sunrise to sunset. Into a pre-existing architectural frame, the artist has inserted a white stone plaque marked with the lines and numbers of the hours. Time is told by Cornelli's fanciful bronze gnomon, in the form of a small lizard, whose raised tail catches the light and casts a shadow onto the hour markings. The animal is so life-like that his immobility seems to be simply a temporary pause in his race across the wall.