The Principality Stadium hosts motorsport events such as the World Rally Championship, as part of Wales Rally GB. The first indoor special stages of the World Rally Championship were held at the Principality Stadium in September 2005 and have been an annual event since. The British Speedway Grand Prix, one of the World Championship events, is held at the Millennium Stadium. While the track—a temporary, purpose built, shale oval—is not universally loved, the venue is considered the best of the World Championship's 11 rounds.