Today, the building that housed both companies is recognized as a Chicago landmark.

Though controversial for its abstract form, it quickly became a Chicago landmark.

It first became a Chicago landmark in May 4, 1977.

Later that month, the building was declared an official Chicago landmark, amended in 2009.

The building was designated a Chicago landmark in 2001.

The building was designated a Chicago landmark on March 26, 1996.

The results of the significance survey led to the sites being designated as Chicago landmarks.

The bridge was designated as a Chicago landmark on December 12, 2007.

The building was named a Chicago Landmark on September 9, 1998.

It became an official Chicago Landmark on July 29, 2003.