South side of the Cadillac Place Towers photographed from a distance

Photo by Helmut Ziewers (www.ziewersphotography.com) of HistoricDetroit.org

Photo by Helmut Ziewers (www.ziewersphotography.com) of HistoricDetroit.org

The front lobby of Cadillac Place, the former world headquarters of General Motors

Photo by Alanna St. Laurent Photography (www.alannastlaurent.com)

The lobby of Cadillac Place

Photo by Alanna St. Laurent Photography (www.alannastlaurent.com)

The chandelier and lobby ceiling of Cadillac Place

Photo by Alanna St. Laurent Photography (www.alannastlaurent.com)

The lobby of the former General Motors world headquarters, today known as Cadillac Place

Photo by Alanna St. Laurent Photography (www.alannastlaurent.com)

The front entrance along Grand Boulevard to Cadillac Place, originally the General Motors world headquarters

Photo by Alanna St. Laurent Photography (www.alannastlaurent.com)

The main entrance to Cadillac Place along West Grand Boulevard

Photo by Alanna St. Laurent Photography (www.alannastlaurent.com)

The front entrance to Cadillac Place off West Grand Boulevard

Photo by Alanna St. Laurent Photography (www.alannastlaurent.com)

The front entrance to Cadillac Place on West Grand Boulevard

Photo by Alanna St. Laurent Photography (www.alannastlaurent.com)

The front lobby of Cadillac Place, off West Grand Boulevard

Photo by Alanna St. Laurent Photography (www.alannastlaurent.com)

Photo by Helmut Ziewers (www.ziewersphotography.com) of HistoricDetroit.org

Photo by Helmut Ziewers (www.ziewersphotography.com) of HistoricDetroit.org

One of the ornate rooms of the former General Motors headquarters almost destroyed by ductwork and "modernization."

Photo by Helmut Ziewers (www.ziewersphotography.com) of HistoricDetroit.org

Photo by Helmut Ziewers (www.ziewersphotography.com) of HistoricDetroit.org

Photo by Helmut Ziewers (www.ziewersphotography.com) of HistoricDetroit.org

Photo by Helmut Ziewers (www.ziewersphotography.com) of HistoricDetroit.org

Photo by Helmut Ziewers (www.ziewersphotography.com) of HistoricDetroit.org

Photo by Helmut Ziewers (www.ziewersphotography.com) of HistoricDetroit.org

Photo by Helmut Ziewers (www.ziewersphotography.com) of HistoricDetroit.org

Photo by Helmut Ziewers (www.ziewersphotography.com) of HistoricDetroit.org

Photo by Helmut Ziewers (www.ziewersphotography.com) of HistoricDetroit.org

Photo by Helmut Ziewers (www.ziewersphotography.com) of HistoricDetroit.org

Photo by Helmut Ziewers (www.ziewersphotography.com) of HistoricDetroit.org

Photo by Helmut Ziewers (www.ziewersphotography.com) of HistoricDetroit.org

Photo by Helmut Ziewers (www.ziewersphotography.com) of HistoricDetroit.org

Cornice detail of Cadillac Place

Photo by Helmut Ziewers (www.ziewersphotography.com) of HistoricDetroit.org

Photo by Helmut Ziewers (www.ziewersphotography.com) of HistoricDetroit.org

The Argonaut Building, left, and Cadillac Place

Photo by Helmut Ziewers (www.ziewersphotography.com) of HistoricDetroit.org

The Fisher Building and Cadillac Place

Photo by Helmut Ziewers (www.ziewersphotography.com) of HistoricDetroit.org