The small plaza to the west has an untitled sculpture by Joan Miró, usually likened to a woman with a fork in her head.
Originally corporate offices, the Brunswick Building was taken over by Cook County for government offices and courtrooms.
The Loop Pedway System makes makes a wide detour as it passes under the building, making room for several retail establishments.
The façade above the base sweeps back slightly in a curve similar to that of the Monadnock Building, another landmark of engineering on Dearborn Street.
Uses a tube-within-a-tube structural system: both the core and perimeter are hollow, rigid tubes which brace the building and allow column-free interiors. This design is an advance from the single tube used in The Plaza on Dewitt; further variations by the same engineer (Fazlur Khan of S.O.M.) gave rise to the John Hancock Center and Sears Tower.
The gravitational force of the outer tube structure is transfered at the base to a set of massive perimeter columns.