Moon Gates by Doris Chase is an abstract group of three bronze sculptures that plays with oppositions inspired by space and form. Two sculptures with convex surfaces, one rhomboid and one ovoid, are each pierced by a circular hole. The concave surface of the third sculpture also contains a round void at its center, but its missing piece can be found attached to the top of the sculpture on a bearing that allows it to rotate. The juxtaposition of positive and negative spaces with circular and rectangular forms creates a dynamism that stimulates the mind and invites the viewer to sit, stand and play among the forms.