From Wikipedia: "The Vitruvian Man is a world-renowned drawing created by Leonardo da Vinci around the year 1487. It depicts a nude male figure in two superimposed positions with his arms and legs apart and simultaneously inscribed in a circle and square. The drawing and text are sometimes called the Canon of Proportions or, less often, Proportions of Man. It is stored in Venice, Italy, but is only displayed on special occasions." You wont have to wait for a special occasion to display this clock.