The Ford Piquette Avenue Plant is a former factory located within the Milwaukee Junction area of Detroit, Michigan, in the United States. Built in 1904, it was the second center of automobile production for the Ford Motor Company, after the Ford Mack Avenue Plant. At the Piquette Avenue Plant, the company created and first produced the Ford Model T, the car credited with initiating the mass use of automobiles in the United States. Prior to the Model T, several other car models were assembled at the factory. Early experiments using a moving assembly line to make cars were also conducted there. It was also the first factory where more than 100 cars were assembled in one day. While it was headquartered at the Piquette Avenue Plant, Ford Motor Company became the biggest U.S.-based automaker, and it would remain so until the mid-1920s. The factory was used by the company until 1910, when its car production activity was relocated to the new, bigger Highland Park Ford Plant. Studebaker bought the factory in 1911, using it to assemble cars until 1933. The building was sold in 1936, going through a series of owners for the rest of the 20th century before becoming a museum in 2001. The Piquette Avenue Plant is the oldest purpose-built automotive factory building open to the public. The museum, which was visited by over 31,000 people in 2018, has exhibits that primarily focus on the beginning of the United States automotive industry. The building was added to the National Register of Historic Places in 2002, became a Michigan State Historic Site in 2003, and was designated a National Historic Landmark in 2006. History Ford period Henry Ford, Detroit coal merchant Alexander Y. Malcomson, and a group of investors formed the Ford Motor Company on June 16, 1903, to assemble automobiles. The company's first car model, the original Ford Model A, began to be assembled that same month at the Ford Mack Avenue Plant, a rented wagon manufacturing shop in Detroit, Michigan. The company quickly outgrew this facility and, on April 10, 1904, bought a parcel of land off of Piquette Avenue in Detroit to accommodate a larger factory. The land was located in the Milwaukee Junction area, whose name is derived from a railroad junction within it. The Ford Piquette Avenue Plant's construction started on May 10, 1904. The company moved into its new factory the following October.