The Prudential Building is an example of an 1890s-era tall building that utilized technological advances such as steel frames, elevators, fireproofing and electric lights. The decorative style of the building also combines intertwined foliage and geometric shapes.

The exterior reflects the internal construction of skeleton steel. Strong vertical lines are created by means of narrow piers and columns, which also allow a maximum of window area and interior light.

- The exterior surfaces are reddish brown terra cotta, decorated with Sullivan's unique style of interlacing ornament inspired by natural forms.

- This ornamentation is also used on the ironwork of the elevators and stair grilles, the hardware, and the mosaic ceilings and upper wall surfaces of the first floor corridors.

- Built as the Prudential Building, this is one of the great buildings of Louis H. Sullivan, a forerunner in the field of modern architecture.

- The building was added to the National Register of Historic Places in 1973.