Piquette Plant opening Henry Ford's secret workshop on Model T's 109th birthday

Soon you can get a glimpse inside automotive pioneer Henry Ford's "secret experimental room."

In 1908, the first Ford Model T rolled out of this room, constructed in the corner of the Piquette Avenue Factory. Henry Ford and his team spent months behind its locked doors, working on creating the "universal car." Only a handful of people were ever allowed inside the room.

The historic plant has recreated the secret room to resemble Ford's workshop, and will be opening the Secret Experimental Room exhibit to the public on Sunday, September 24, 2017 -- which is the 109th anniversary of the Model T.

"We had an archaeologist here helping us as well. We found evidence in this room in terms of how walls were made; where the doors were positioned; exactly where everything was located; where the equipment that they used was located, because it's drilled into the floor. Those are the evidence pieces that have been so important to us to be able to recreate this exhibit," explains Steve Shotwell, vice president of Ford Piquette Avenue Plant.

In addition to physical evidence in the plant, the recreation was based on historic photos and oral histories conducted with men who worked there.

Admission to the piquette avenue plant will be free this Sunday between noon and 4 p.m.

The Ford Piquette Avenue Plant is located at 461 Piquette Street in Detroit. For more information, visit www.fordpiquetteavenueplant.org.