Italian Grand Prix - Wikipedia
https://en.wikipedia.org/wiki/Italian_Grand_PrixThe first Italian Grand Prix took place on 4 September 1921 at a 10.7-mile (17.3 km) circuit near Montichiari. However, the race is more closely associated with the course at Monza, a racing facility just outside the northern city of Milan, which was built in 1922 in time for that year's race, and has been the location for most of the races over the years.
Monza Circuit - Wikipedia
https://en.wikipedia.org/wiki/Monza_CircuitThe first track was built from May to July 1922 by 3,500 workers, financed by the Milan Automobile Club – which created the Società Incremento Automobilismo e Sport (SIAS) (English: Motoring and Sport Encouragement Company) to run the track. The initial form was a 3.4 square kilometres (1.31 sq mi) site with 10 kilometres (6.2 mi) of macadamisedroad – comprising a 4.5 ki…