Gold spheres

Along each of the passageways, there are long rows of gold spheres, as seen here. Wright felt that the spheres covered what would have otherwise been long banal straight lines along each side of the passageways, and served a functional purpose as well: Over time, the building would settle, and the lines would no longer be straight. By using the spheres, Wright made it possible to cover up what would otherwise have been an aesthetic unpleasantness.