A bit of it's history;
Top floor or two were never finished, never occupied. I think it was meant to be another Detroit "new center" like area, (also called mid town) where the Fisher building and former GM buildings are. Yes, Detroit sort of had two down town's, but one is uptown.
As the locale surrounding it became more industrial, office use became more unnecessary there.
A Detroit American Lebanese business magnate and shipping expediter "Maddy Maroon" was the previous owner. He put the new windows in. Before, with no windows, it looked like a bombed out WW2 building in Berlin.
He also owns/owned the Ambassador bridge. He is in his 90's now. I doubt the children want it. The city wanted to force him to do something more with it, or raize it.
Down town is being renewed with money and efforts from Dan Gilbert of Quicken loans, Ford, The Little Caeser's Ilich family, Fiat/Chrysler, Compuware, etc. Next are the now brown and green fields which were old neighborhoods. Brush park is already underway, and a few mansions have been saved.
You can hire a pedal mobile which seats 4 to 5 abreast downtown, or ride the Q line to New Center. New venues include Shake Shack, Hard Rock cafe', and several other clubs, lounge/restaurants and small theatres. MGM Grand hotel/casino/ Greek town hotel and casino, as well as the brand new Little Caesers arena for the Red Wings. The Pistons are also moving there, and Joe Lewis arena will be raized for something new.
Between down town and the old train station is the Motor City casino/hotel, once a Wonder Bread bakery plant.
Well heeled young professional are moving into lofts, condo's, and new rentals.
Whole Foods opened a new store two years ago in New Center.
Not many visit Detroit for fun, at least not yet, other than the Henry Ford museum, and Greenfield Village.
Those have all of the history of the industrial revolution through WW2. There is also a nice historical museum near the Institute of Arts, between Mid town, and the medical center.
Change is possible when attitudes improve.