Which principality did the man, after which Ranier III Nautical Stadium is named, rule?
Rainier III Nautical Stadium: The Rainier III Nautical Stadium is a municipal sports complex on the Route de la Piscine in the La Condamine district of Monaco, in Port Hercules. Rainier III, Prince of Monaco: Rainier III (born Rainier Louis Henri Maxence Bertrand Grimaldi; 31 May 1923 – 6 April 2005) ruled the Principality of Monaco for almost 56 years, making him one of the longest ruling monarchs in European history.
Principality of Monaco