On the 19th of November in 2017 Monaco honors Rainier III, Prince of Monaco with their Prince Rainier Day. The date is the anniversary of his coronation in 1949. He was Monaco's prince until he died in 2005 and was married to Grace Kelly which brought him international prominence. They had three children together and the only son Prince Albert II later inherited the throne of Monaco. The Principality of Monaco is a city-state on the French Riviera at the Mediterranean Sea. It is independent from France but shares the French law. Monaco is popular destination for holidays, especially for the rich.