The GM Technical Center is a General Motors facility in Warren, Michigan. The campus has been the center of the company's engineering effort since its inauguration in 1956. In 2000 it was listed on the National Register of Historic Places; fourteen years later it was designated a National Historic Landmark.[2] The "Tech Center" was designed by architect Eero Saarinen, with construction beginning in 1949. The campus was completed in 1955 and ceremonially opened by President Dwight D. Eisenhower on May 16, 1956. The facility cost the company approximately US$100 million at the time. The American Institute of Architects honored it in 1986 as the most outstanding architectural project of its era. The "Tech Center" is a 710-acre campus located in Warren, Michigan. The Technical Center includes 38 buildings and can house over 21,000 employees. The campus is bounded by Van Dyke Avenue on the east, by Mound Road on the west, by Chicago Road on the north and by 12 Mile Road on the south. The site offers an advanced technology business atmosphere emphasizing flexibility, efficiency, innovation, quality, safety, and security. It includes 11 miles (18 km) of roads and 1.1 miles (1.8 km) of tunnels, a water tower and 22-acre (89,000 m2) lake. Newsmarket