Some of the Grands Prix, such as the oldest recognised event, the French Grand Prix, pre-date the formation of the World Championship and were incorporated into the championship as Formula One races in 1950. The British and Italian Grands Prix are the only events to have been held every Formula One season; other long-running races include the Belgian, German and French Grands Prix. The Monaco Grand Prix, first held in 1929 and run continuously since 1955 (with the exception of 2020), is widely considered to be one of the most important and prestigious automobile races in the world.