During a 1955 event in this city, Alberto Ascari accidentally plunged into its Port Hercules. The architect of the Parisian opera house Palais Garnier also designed an opera house in this city called Salle Garnier. Land southwest of this city’s Le Rocher district reclaimed from the sea became its Fontvieille ward, which contains this city’s Louis II Stadium. After being challenged by its chief official, Alain Ducasse opened the restaurant Le Louis XV in this city. This city is divided into four historical (*) quartiers. The Fairmont Hotel names a notorious “Hairpin” turn of this city’s Formula One (10[1])Grand Prix. (10[1])In 1956, actress Grace Kelly married into (10[1])the royal family of this city, (10[1])becoming involved in its Monte Carlo Ballet. For 10 points, name this small principality in the French Riviera, a resort town for millionaires. ■END■