Forrest Myers’s Four Corners, a visually complex, open, incomplete cube, is composed of four different materials: bronze, stainless steel, weathering steel, and concrete. It exemplifies an interest held by many sculptors in the 1960s and 1970s in physically and mentally engaging the viewer and playing with perception. In Four Corners, the viewer is invited to enter the sculpture’s space and mentally complete its known Platonic form. The work activates additional layers of meaning in its title, which refers not only to the four corners of a cube but also to the four materials used to create the sculpture and perhaps to the far reaches of the globe.