In 1973 the Chicago Sun-Times architecture critic named this the city's best building of 1972.
In 1999 the lobby and first 3 floors of the façade were redone in Neo-Classical style by Spanish architect Ricardo Bofill.
Originally painted a creamy white, the concrete exterior was painted dark brown in the mid-1980's, then restored in 1999 back to the original off-white.
In October 1972, the first tree on LaSalle Street south of the river was planted outside this building: one of several London plane trees selected by architect Harry Weese for their resistance to dirt and fumes.
The windows project one inch from the façade, causing rainwater to flow around them instead of coursing over the glass.