The Monaco Grand Prix was part of the pre-Second World War European Championship and was included in the first World Championship of Drivers in 1950. It was twice designated the European Grand Prix, in 1955 and 1963, when this title was an honorary designation given each year to one Grand Prix race in Europe. Graham Hill was known as "Mr. Monaco" due to his five Monaco wins in the 1960s. Ayrton Senna won the race more times than any other driver, with six victories, winning five races consecutively between 1989 and 1993.