Octetra is a concrete sculpture by Isamu Noguchi (1904–1988) from 1968. Description It is an abstract painted concrete sculpture. It was designed to be a play structure. History It was first exhibited near Spoleto Cathedral There are examples at Robert T. Webb Sculpture Garden, Takamatsu Japan, Moerenuma Park. It was shown at the Pace Gallery. References Outdoor sculptures in Italy 1968 sculptures Concrete sculptures