For the most part, races were run over a lengthy circuit of closed public roads, not purpose-built private tracks. This was true of the Le Mans circuit of the 1906 "Grand Prix", as well as the "Targa Florio" (run on of Sicilian roads), the German "Kaiserpreis" circuit in the Taunus mountains, and the French circuit at Dieppe (a mere ), used for the 1907 Grand Prix. The exceptions were the steeply banked egg-shaped near oval of Brooklands in England, completed in 1907, the Indianapolis Motor Speedway, first used in 1909 with the first Indianapolis 500-Mile Race in 1911, and the Autodromo Nazionale Monza, in Italy, opened in 1922.