Two light prisms by Heinz Mack

The two triangular stelae are made of a coloured glass that has been specially vapour-coated, and which changes its appearance in many different ways with the changing light conditions and also with the position of the observer. The stelae document a new, different reality in a central location in Vaduz. "They are the dreams that one dreams when light sleeps with matter." (Quote from Heinz Mack)