The city of Detroit has made efforts to lure the region’s growth companies downtown with advantages such as a wireless Internet zone, business tax incentives, entertainment, the Detroit International Riverfront, and residential high-rises. Compuware completed its world headquarters in downtown Detroit. OnStar, Blue Cross Blue Shield, and HP Enterprise Services have located at the Renaissance Center. Price Waterhouse Coopers Plaza offices are adjacent to Ford Field, and Ernst & Young completed its office building at One Kennedy Square. Some Fortune 500 companies headquartered in Detroit include General Motors, auto parts maker American Axle & Manufacturing, and DTE Energy. Other major industries include advertising, law, finance, biomedical research, health care, and computer software. The law firm of Miller, Canfield, Paddock & Stone, one of the largest in the U.S., has offices in both Detroit and Windsor. Wayne State University and medical service providers are major employers in the city.