Within the Modulaion series the overlapping repetition of rib-like elements made it possible to produce varying layers of patterned indentations and fenestrations in the pavilions surfaces. When viewed from different angles and in different light conditions, these relief patterns would seem to subtly change their composition and appearance. These shifting properties were further enhanced by the overlaying of shadows across the embossed surfaces of the forms and the ground around them. In these cases the effects of the changing patterns of the structure’s skin and their play with light and shadow, would make the pavilions apparently dissolve in a complex interplay of optical affects. The observation of these properties led to the consideration of how it may be possible to begin to conceive of structures, whose composition would create perceptual gestalts which transfigure the solid forms into overlapping fields of interference patterns.