Flying Dragon (1975)

by Alexander Calder

Best known as the inventor of the mobile, Alexander Calder also produced many stabiles, or stationary sculptures composed of fixed elements. At first creating on a relatively small scale, Calder moved increasingly toward monumentality in his later work and consequently spearheaded a renaissance in public sculpture during the latter half of the 20th century in both the United States and Europe. Even though colossal stabiles like Flying Dragon (and Flamingo, located at Chicago’s Federal Center Plaza) lack a mobile’s moving parts, they appear just as animated. Flying Dragon’s arching forms and dynamic red surface make this fantastic animal seem to take flight.

Cubi VII (1963)

by David Smith

Self-taught sculptor David Smith developed his welding techniques at an automobile plant and a locomotive factory. His work mixes the style of the American machine shop with surrealism, Abstract Expressionism, and cubism. The Cubi series, composed of 28 separate works, was executed in the four years before the artist’s untimely death. The wire-brushed surface of Cubi VII lends the work its gestural, expressive quality, while the form itself makes the viewer question balance, weight, and positive and negative space.

Large Interior Form (1953/54)

by Henry Moore

Henry Moore’s towering 16-foot sculpture Large Interior Form is among his more mature works, made when the artist was concerned with the construction of three-dimensional space, internal forms within solid volumes, and placing his work in a natural setting. Early in his career, Moore worked primarily in stone but shifted to modeling and bronze casting once these formal concerns took hold. Large Interior Form plays with mass and void, gravity and growth, and man and nature. A complement to Large Upright Internal External Form, Moore’s sculpture in the atrium of Three First National Plaza (at 70 West Madison Street), Large Interior Form, in particular, juxtaposes its natural-looking shape with its man-formed substance.

Untitled (1987)

by Ulrich Rückriem

Ulrich Rückriem worked between 1957 and 1959 as a stonecutter in Düren, Germany, but it wasn’t until several years later that he decided to translate his interest in stone work into art. He visited a quarry and created his first sculpture: a block of dolomite split into five sections and reassembled, much like the work in the North Garden. His works manage to combine a sense of prehistory with procedural art, and Rückriem said of his first experience in the quarry, “I understood the force of the blocks. I didn’t want to weaken it, but rather to intensify it, if anything. . . . I try to grasp the meaning of the space, not to alter it, to follow it, and submit to it.”