Completed after Wright’s death, the museum and its spiraling rotunda led the way to new uses of reinforced concrete. The design also reconceived the museum building, discarding the idea of a neutral container in favor of a work of architectural art that engages in an active dialogue with the paintings and sculptures it holds. The design, the conservancy said, showed how to convey “a sense of strength and purpose in architecture without lapsing into traditional patterns of monumentality.”