High Quality Content by WIKIPEDIA articles! University of Phoenix Stadium, opened August 1, 2006, is a multipurpose football stadium located in Glendale, Arizona. It is the home of the Arizona Cardinals of the National Football League (NFL) and the annual Fiesta Bowl. The stadium is located next door to the Jobing.com Arena and it features the first fully retractable natural grass playing surface built in the United States on top of an AirField Systems drainage system. An opening on one side of the stadium allows the playing field to move to the exterior of the building, allowing the entire natural turf playing surface to be exposed to daylight.