Earlier in the year, the spire's Chicago sales office had been ejected from the nearby NBC Tower.

It maintains primary studios and business offices at the NBC Tower in the Streeterville neighborhood.

On October 1, 1989, the station began broadcasting from the NBC Tower after 40 years at the Merchandise Mart.

WMAQ would remain there until a 1989 move to the NBC Tower.

It is taped at NBC Tower in Chicago but includes cases and litigants from other U.S. jurisdictions.

The second, with them moving to the 670 frequency after the merger of Westinghouse and CBS Radio, was at the NBC Tower.

NBC was a tenant until it moved to the NBC Tower in 1989.

It is located in Suite 850 of the NBC Tower in the Near North Side.

The 900 North Michigan building is 60 percent leased and NBC Tower is 40 percent leased.

But for now, the NBC Tower stands proudly alone, more visible from all sides than virtually any other skyscraper in town.